2个回答
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一、根据句意和括号中的提示填上句中所缺单词。(共9分，每题1分)
1. Our English teacher is always very ________to us. （friend）
2. He would like ________ a teacher when he grows up. （be）
3. He's one of ________ boys in my class. （nice）
4. You must be ________than before. The bus nearly hit you. （careful）
5. Skiing is as ________as diving. （dangerous）
6. Millie's English is ________ than Amy's. （good）
7. Peter is ________ one of the six students. （heavy)
8. Betty is ________. （慷慨的）
9. Mr Zhou often helps people ________ problems. （解决）
二、选择填空 （ 共30分，每题1.5分）
（ ）1. Is there ________ today's newspaper?
A. something new in B. anything new in C. new anything at D. new something on
（ ）2. I think tofu is good ________ your health.
A. at B. for C. to D. on
（ ）3. Don't eat that meat. It smells ________.
A. dirty B. delicious C. bad D. badly
（ ）4. ----Lily, would you like ________ apples?
---- No, thank you. I’m full.
A. some B. fewer C. an D. many
（ ）5. The lessons in Unit One ________ than those in Unit Two.
A. is long B. is longer C. are long D. are longer
（ ）6. Lucy’s cake is ________ of all.
A. big B. bigger C. biggest D. the biggest
（ ）7. The Changjiang River is ________ in the world.
A. a longest river B. the longest rivers
C. one of the longest river D. one of the longest rivers
（ ）8. Today is my birthday. I feel very ________.
A. happily B. happy C. happier D. happiest
（ ）9. Look! She ________ a smile on her face and looks happy.
A. with B. wear C. is wearing D. have
（ ）10. There’s ________ in the fridge.
A. nothing else B. everything else C. else nothing D. else everything
（ ）11. This is ________ honest boy. He is ________.
A. an; looking-good B. a; good-looking C. a; looking-good D. an; good-looking
（ ）12. He ________ because he has bad eyesight.
A. wears a smile B. wears glasses C. wears a skirt D. wears short hair
（ ）13. Basketball is ________ football in the world.
A. more popular as B. not as more popular as
C. not as popular as D. popularer than
（ ）14. ---- May I have ________ cake, please?
---- Here you are.
A. another one B. one another C. other one D. one more
（ ）15. ________ heavy rain! How can I go home?
A. What B. What a C. How D. How a
（ ）16. You look ________ your twin brother. You are tall and fat but be is short and thin.
A. the same as B. the same like C. different from D. different as
（ ）17. We needed some vegetables for our supper, but there ________ any in the fridge.
There ________ only some chicken in it.
A. isn’t; are B. aren’t; is C. wasn’t; were D. weren’t; was
（ ）18. ---- What’s he doing?
---- He’s ________ his pen. But he can’t ________ it.
A. looking for; look for B. finding; find
C. looking for; find D. finding; look for
（ ）19. Could you ________ me your photo next time, please? I want to have a look.
A. take B. bring C. give D. carry
（ ）20. An apple a day keeps doctor away. It means eating an apple every day can make you _____.
A. keep health B. ill C. good D. healthy
三、句型转换（共10分，每空1分）
1. My book is more interesting than his book. （改为同意句）
His book ________ ________ interesting as my book.
2. He's funny and helpful. （对划线部分提问）
________ is he ________?
3. Lucy is a clever girl. （改为感叹句）
________ ________ the girl is!
4. I don't want to become a singer. I think. （合为一句）
I ________ think I ________ to become a singer.
5. Lucy likes learning Chinese. Lily likes ,too.（合并为一句）
________ Lucy ________ Lily like learning Chinese.
四、改错题。（每题一分，共8分）
下列各句中均有一处错误，请在错的单词下面划一条线，然后在题后的横线上改正
1. There are something good in the fridge. _________
2. May is a truly friend. _________
3. He has a bad cold because the bad weather. _________
4. My best friend always gives me good advices. _________
5. Diving is more dangerous activity of all. _________
6. Are you agree with me? _________
7. Swimming is so interesting as hiking. _________
8. My cat is much lazier than your. _________
五、完成句子（每空一分，共23分）
1、Mary 留着长发，长着蓝色的大眼睛。
Mary __________ __________ __________ and big blue eyes.
2、我很饿，可以吃点东西吗？
I’m __________. Can I __________ __________ __________ __________?
3、我的好朋友Max看上去很滑稽，且很有幽默感。
My good friend Max looks funny and __________ __________ __________ __________ __________ __________.
4、你愿意和你的好朋友分享快乐吗？
__________ you __________ __________ __________ your joy __________ your friend?
5、我认为苏州比杭州更美丽。
I think Suzhou __________ __________ __________ __________ Hangzhou.
六、完形填空（每空一分，共10分）
Mr White works in an office. He liked reading in bed when he was at school. It was bad for his 1 and now he has near sight. But he wouldn’t want 2 to know about it and he never wears a pair of glasses. It often 3 him some trouble.
One winter morning he was sent to a village（村庄） school on business （出差）. He 4 a bus at a stop in a small town. Then he had to walk there. The road to the village wasn’t smooth （平坦）. He fell over some times and it 5 his clothes dirty. 6 he got to the village. Suddenly it began to blow（刮风） and it got colder. He was looking for the school while his 7 was blown off. He began to run after it but he couldn’t get it. He couldn’t understand why his hat ran into a house as if （似乎） it had 8 . And he ran into the house, 9 .
A woman stopped him and shouted angrily, “ 10 are you running after my hen (母鸡 )for?”
（ ）1. A. ears B. nose C. mouth D. eyes
（ ）2. A. anybody else B. nobody C. woman D. somebody
（ ）3. A. follows B. takes C. brings D. carries
（ ）4. A. took off B. got off C. got on D. came on
（ ）5. A. let B. made C. gave D. felt
（ ）6. A. At first B. At home C. At times D. At last
（ ）7. A. clothes B. bag C. hat D. glasses
（ ）8. A. legs B. hands C. shoes D. arms
（ ）9. A. always B. also C. either D. too
（ ）10. A. What B. Why C. Which D. Who
七、阅读理解（每题2分，共10分）
The sea looks very beautiful when the sun is shinning on it. It can be very terrible when there’s a strong wind.
The sea is very big. The sea is also very deep（深）in some places. There is one place. The sea is about 11 kilometers deep. The highest mountain in the world is about 9 kilometers high. If that mountain was put into the sea at that place, there would be still 2 kilometers of water above it.
In most parts of the sea, there are many kinds of fishes and plants. Some live near the top of the sea. Others live deep down. There are also a lot of small living things, lots of fish live by eating them.
The sea can be very cold. When people go down, the sea becomes colder and colder. But, in 1970, five women scientists live in the deep sea for fourteen days.
（ ）1. The sea is very terrible ________.
A. all the time B. when it is raining
C. when there is a strong wind D. when the sun is shining.
（ ）2. There is one place. The sea is as deep as ________ there.
A. 11 kilometers B. the highest mountain C. 9 kilometers D. 2 kilometers
（ ）3. There are a lot of small living things in the sea, and ________.
A. they live by eating fish B. they are good food for fish
C. they live by eating plants D. they live with fish
（ ）4. When people go down, the sea becomes colder and colder because ________.
A. people are very tired B. people go down too fast
C. the temperature（温度）of the deep sea is lower (低的)than that of the top of the sea
D. the temperature of the top of the sea is lower than that of the deep sea
（ ）5. in 1970, five women scientists live in the deep sea for fourteen days. This showed ________.
A. women liked living in the sea B. women couldn’t go down into the sea
C. women wanted to swim in the sea D. women could do the same work as a man
参考答案
一、 根据句意和括号中的提示填上句中所缺单词（9分）
1. friendly 2. to be 3. the nicest 4. more careful 5. dangerous
6. better 7. the heaviest 8. generous 9. solve
二、选择填空（30分）
1----5 BBCAD 6----10 DDBCA 11----15 DBCDA 16----20 CDCBD
三、句型转换（10分）
1. isn’t as 2. what like 3. How clever 4. don’t want 5. Both and
四、改错题（8分）
1. are → is 2. truly → true 3. because → because of 4. advices → advice
5.more → the most 6. Are → Do 7. so → as 8. your → yours
五、完成句子（23分）
1. has long hair
2. hungry have something to eat
3. has a good sense of humo(u)r
4. Are willing to share with
5. is more beautiful than
六、完形填空（10分）
1----5 DACBB 6----10 DCADA
七、阅读理解（10分）
1----5 CABCD
八年级物理月考试题
一：选择题
1 对于蒸发和沸腾这两种汽化方式，下列说法错误的是：( )
A 都是由液态变为气态 B 都需要在一定温度下进行
C 蒸发是在液体表面进行，沸腾在液体内部和表面同时进行
D 蒸发和沸腾都需要吸热
2 夏天扇扇子，人感到凉爽，主要是因为扇来的风：( )
A 降低了周围的空气温度 B 降低了人的体温
C 加快了人身上汗水的蒸发 D 赶走了人体周围的热空气
3 夏天，人站在吊扇下吹风会有凉爽的感觉，如果把一只温度计放在这个吊扇下，温度计的示数将会：( )
A．升高 B。降低
C． 不变 D。以上三种情况都有可能
4 下面说法中正确的是：( )
A 一切气体都可用降低温度方法液化 B 用液化石油气是为了减轻重量
C 烧开水时壶口冒出“白气”不是小水珠
D 夏天自来水管外表面常常湿漉漉的，这是水管漏水造成的
5 关于热现象，下列说法中正确的是：( )
A． 天热扇扇子觉得凉快些，是因为空气的温度降低了
B． 冬天看到人们呼出的“白气”是水蒸气
C． 被100℃水蒸气烫伤比100℃开水烫伤还严重，是因为水蒸气液化放热的缘故
D． 湿衣服变干，是液化现象
6 在26℃的室内将温度计从装有酒精的瓶中取出，它将会：( )
A．立即上升 B。先上升后下降
C．先下降后上升 D。一直不变
7 在卫生间里洗过热水澡后，室内的玻璃镜面变得模糊不清，过了一段时间，镜面又变得清晰起来。镜面上发生的这两种现象的物态变化情况是：( )
A．先汽化，后液化 B．先液化，后汽化
C．只有液化 D．只有汽化
8 闷热的夏天，从电冰箱取出一块冻肉放在台式秤盘中，过一会秤的示数将：( )
A．增大 B。减小
C．保持不变 D。无法判断
9 晶体在熔化过程中：( )
A 温度保持不变，放出热量 B 温度保持不变，吸收热量
C 温度上升，吸收热量 D 温度下降，放出热量
10 下列说法正确的是：( )
A一般物质在熔化和凝固的过程中，温度均保持不变
B物体吸收热量后，温度一定升高
C同一物质的熔点和凝固点相同
D0℃的冰比0℃的水冷一些
11 下列各组物质中，都是晶体的是：( )
A．冰和水 B。铜和固态水银
C．玻璃和石蜡 D。海波和萘
12 图中表示物质的温度随时间的变化图，其中表示晶体凝固的是：( )
13 海波是一种晶体，熔点是48℃，温度是48℃的海波，它的状态：( )
A 一定是固态 B 一定是液态
C 一定是固、液共存态 D 以上三种情况都有可能
14 南极的最低气温可达—88.3℃，科考队员要测量南极的气温，应选用：( )
[几种物质的熔点：酒精—117℃ 水银—39℃ 煤油—30℃ 冰0℃]
A．体温计 B。煤油温度计
C．酒精温度计 D。水银温度计
15 将一盆冰水混合物放在太阳底下，冰开始熔化，当水面还有冰浮着时，则：( )
A 冰的温度升高，水的温度不变 B 冰的温度不变，水的温度升高
C 冰、水的温度都升高 D 冰、水的温度都不变
16 把盛有碎冰块的大试管插入烧杯里的碎冰块中，如图用酒精灯对烧杯底部慢慢的加热，当烧杯中冰块有大半熔化时，则试管中的冰：( )
A．也熔化一部分 B。全部熔化
C．一点都不熔化 D。无法确定
17 放在箱子中的卫生球不见了，发生的物态变化是：( )
A．熔化 B。汽化
C。升华 D。同时升华和汽化
18 在夏天会看到冰棍冒出白色的“气”，这是因为：( )
A 冰棍蒸发产生的水蒸气 B 冰棍升华产生的小冰晶
C 冰棍熔化成小水珠 D 冰棍周围空气中的水蒸气液化而成的小水珠
19 白炽灯炮使用久了，玻璃壁会变黑，这是因为：( )
A． 落上了灰尘 B。 钨丝发生升华现象
C． 钨丝发生凝华现象 D。 发生了升华与凝华现象
20 下列现象中都发生了物态变化，其中属于升华的是：( )
A 卫生球放了一段时间会变小 B 江面上逐渐形成了大雾
C 擦在玻璃上的酒精很快干了 D 冰块吸热后逐渐熔化
21 下面几组物态变化过程，都是放出热量的是：( )
A．熔化、汽化、升华 B。凝固、液化、凝华
C．熔化、液化、凝华 D。凝固、汽化、升华
22 下列物态变化过程中，需要吸收热量的是：( )
A．霜的形成 B。露的形成
C．冰化成水 D。水结成冰
23 为了抗旱，向空中云层中发射“干冰炮弹”，就能实现降雨，这是因为：( )
A 干冰熔化变为水
B 二氧化碳气体迅速液化而成的小液滴
C 干冰在云层中迅速升华又凝华而形成的
D 干冰在云层中升华吸热，使云层中的水蒸气液化成小水滴
24 关于温度计下列说法不正确的是：( )
i. 普通温度计不能离开被测物体观察温度
ii. 体温计的测量范围是35℃-42℃
iii. 常见的温度计都是用水银作测温物质
iv. 常用液体温度计是根据液体热胀冷缩的原理制成的
25 某同学用体温计测得甲的体温是37.5℃，若没有甩过，又用它去依次测量乙和丙的体温，已知乙和丙的实际体温是36.5℃和38.2℃，那么两次测温后，他的记录数据是：( )
A．36.5℃和38.2℃ B。37.5℃和38.2℃
C．36.5℃和37.5℃ D。37.5℃和37.5℃
二：填空题
26 如图所示，是锡的熔化和凝固的图象，根据图象回答：
a) 锡的熔点是______，凝固点是______。
b) 在BC段，锡处于____________状态；在DE段，锡处于________状态。
c) 锡的熔化用了______min，它熔化过程中要______热，但温度_______。
d) 锡从10min到12min这段时间间隔内处于___________状态。
27 居民使用的液化石油气，就是在常温下用_________的方法使石油气变为液体储存在钢罐中的。
28 写出下列物态变化的名称
a) 冬天早晨出来跑步，嘴里往外呼“白气”，是_____现象.
b) 冰雪化成水，是________现象.
c) 洗过的衣服晾干了，是_____现象.
d) 钢水变成钢锭，是_____现象.
e) 夏天，自来水管常“出汗”，是________现象.
f) 掀开沸水锅的锅盖，可以看到有水从锅盖上滴下，这是_______现象。
g) 冬天戴眼镜的人从外面进到暖和的屋子里，镜片上会出现水珠，这是______现象.
三、问答题
29、储存在关好的饭橱里的面包和放在桌子上的面包哪个硬的快些？
答：同样的面包， 硬的快些，这是因为 的空气比 的空气流动
（填快些或慢些），面包里的水分也就蒸发的 ，所以面包硬的快些。
30、请解释下面的实验：取一张牛皮纸，把它的四个角用细绳吊起来，然后向里面装上适量的水，并在下面烧火，看看水会不会沸腾，牛皮纸会不会烧着。
答：水 （填会或不会）沸腾，牛皮纸 （填会或不会）烧着，牛皮纸装水，放在火焰上，火焰放出的热量通过牛皮纸被水吸收，是水 ，因为水（在1个标准大气压下）沸腾时，温度会保持在 ，牛皮纸装水，水渗入牛皮纸面把它湿润了，所以牛皮纸的温度跟水的温度 ，这样的温度低于牛皮纸的着火点，是不会把牛皮纸点燃的。
1. Our English teacher is always very ________to us. （friend）
2. He would like ________ a teacher when he grows up. （be）
3. He's one of ________ boys in my class. （nice）
4. You must be ________than before. The bus nearly hit you. （careful）
5. Skiing is as ________as diving. （dangerous）
6. Millie's English is ________ than Amy's. （good）
7. Peter is ________ one of the six students. （heavy)
8. Betty is ________. （慷慨的）
9. Mr Zhou often helps people ________ problems. （解决）
二、选择填空 （ 共30分，每题1.5分）
（ ）1. Is there ________ today's newspaper?
A. something new in B. anything new in C. new anything at D. new something on
（ ）2. I think tofu is good ________ your health.
A. at B. for C. to D. on
（ ）3. Don't eat that meat. It smells ________.
A. dirty B. delicious C. bad D. badly
（ ）4. ----Lily, would you like ________ apples?
---- No, thank you. I’m full.
A. some B. fewer C. an D. many
（ ）5. The lessons in Unit One ________ than those in Unit Two.
A. is long B. is longer C. are long D. are longer
（ ）6. Lucy’s cake is ________ of all.
A. big B. bigger C. biggest D. the biggest
（ ）7. The Changjiang River is ________ in the world.
A. a longest river B. the longest rivers
C. one of the longest river D. one of the longest rivers
（ ）8. Today is my birthday. I feel very ________.
A. happily B. happy C. happier D. happiest
（ ）9. Look! She ________ a smile on her face and looks happy.
A. with B. wear C. is wearing D. have
（ ）10. There’s ________ in the fridge.
A. nothing else B. everything else C. else nothing D. else everything
（ ）11. This is ________ honest boy. He is ________.
A. an; looking-good B. a; good-looking C. a; looking-good D. an; good-looking
（ ）12. He ________ because he has bad eyesight.
A. wears a smile B. wears glasses C. wears a skirt D. wears short hair
（ ）13. Basketball is ________ football in the world.
A. more popular as B. not as more popular as
C. not as popular as D. popularer than
（ ）14. ---- May I have ________ cake, please?
---- Here you are.
A. another one B. one another C. other one D. one more
（ ）15. ________ heavy rain! How can I go home?
A. What B. What a C. How D. How a
（ ）16. You look ________ your twin brother. You are tall and fat but be is short and thin.
A. the same as B. the same like C. different from D. different as
（ ）17. We needed some vegetables for our supper, but there ________ any in the fridge.
There ________ only some chicken in it.
A. isn’t; are B. aren’t; is C. wasn’t; were D. weren’t; was
（ ）18. ---- What’s he doing?
---- He’s ________ his pen. But he can’t ________ it.
A. looking for; look for B. finding; find
C. looking for; find D. finding; look for
（ ）19. Could you ________ me your photo next time, please? I want to have a look.
A. take B. bring C. give D. carry
（ ）20. An apple a day keeps doctor away. It means eating an apple every day can make you _____.
A. keep health B. ill C. good D. healthy
三、句型转换（共10分，每空1分）
1. My book is more interesting than his book. （改为同意句）
His book ________ ________ interesting as my book.
2. He's funny and helpful. （对划线部分提问）
________ is he ________?
3. Lucy is a clever girl. （改为感叹句）
________ ________ the girl is!
4. I don't want to become a singer. I think. （合为一句）
I ________ think I ________ to become a singer.
5. Lucy likes learning Chinese. Lily likes ,too.（合并为一句）
________ Lucy ________ Lily like learning Chinese.
四、改错题。（每题一分，共8分）
下列各句中均有一处错误，请在错的单词下面划一条线，然后在题后的横线上改正
1. There are something good in the fridge. _________
2. May is a truly friend. _________
3. He has a bad cold because the bad weather. _________
4. My best friend always gives me good advices. _________
5. Diving is more dangerous activity of all. _________
6. Are you agree with me? _________
7. Swimming is so interesting as hiking. _________
8. My cat is much lazier than your. _________
五、完成句子（每空一分，共23分）
1、Mary 留着长发，长着蓝色的大眼睛。
Mary __________ __________ __________ and big blue eyes.
2、我很饿，可以吃点东西吗？
I’m __________. Can I __________ __________ __________ __________?
3、我的好朋友Max看上去很滑稽，且很有幽默感。
My good friend Max looks funny and __________ __________ __________ __________ __________ __________.
4、你愿意和你的好朋友分享快乐吗？
__________ you __________ __________ __________ your joy __________ your friend?
5、我认为苏州比杭州更美丽。
I think Suzhou __________ __________ __________ __________ Hangzhou.
六、完形填空（每空一分，共10分）
Mr White works in an office. He liked reading in bed when he was at school. It was bad for his 1 and now he has near sight. But he wouldn’t want 2 to know about it and he never wears a pair of glasses. It often 3 him some trouble.
One winter morning he was sent to a village（村庄） school on business （出差）. He 4 a bus at a stop in a small town. Then he had to walk there. The road to the village wasn’t smooth （平坦）. He fell over some times and it 5 his clothes dirty. 6 he got to the village. Suddenly it began to blow（刮风） and it got colder. He was looking for the school while his 7 was blown off. He began to run after it but he couldn’t get it. He couldn’t understand why his hat ran into a house as if （似乎） it had 8 . And he ran into the house, 9 .
A woman stopped him and shouted angrily, “ 10 are you running after my hen (母鸡 )for?”
（ ）1. A. ears B. nose C. mouth D. eyes
（ ）2. A. anybody else B. nobody C. woman D. somebody
（ ）3. A. follows B. takes C. brings D. carries
（ ）4. A. took off B. got off C. got on D. came on
（ ）5. A. let B. made C. gave D. felt
（ ）6. A. At first B. At home C. At times D. At last
（ ）7. A. clothes B. bag C. hat D. glasses
（ ）8. A. legs B. hands C. shoes D. arms
（ ）9. A. always B. also C. either D. too
（ ）10. A. What B. Why C. Which D. Who
七、阅读理解（每题2分，共10分）
The sea looks very beautiful when the sun is shinning on it. It can be very terrible when there’s a strong wind.
The sea is very big. The sea is also very deep（深）in some places. There is one place. The sea is about 11 kilometers deep. The highest mountain in the world is about 9 kilometers high. If that mountain was put into the sea at that place, there would be still 2 kilometers of water above it.
In most parts of the sea, there are many kinds of fishes and plants. Some live near the top of the sea. Others live deep down. There are also a lot of small living things, lots of fish live by eating them.
The sea can be very cold. When people go down, the sea becomes colder and colder. But, in 1970, five women scientists live in the deep sea for fourteen days.
（ ）1. The sea is very terrible ________.
A. all the time B. when it is raining
C. when there is a strong wind D. when the sun is shining.
（ ）2. There is one place. The sea is as deep as ________ there.
A. 11 kilometers B. the highest mountain C. 9 kilometers D. 2 kilometers
（ ）3. There are a lot of small living things in the sea, and ________.
A. they live by eating fish B. they are good food for fish
C. they live by eating plants D. they live with fish
（ ）4. When people go down, the sea becomes colder and colder because ________.
A. people are very tired B. people go down too fast
C. the temperature（温度）of the deep sea is lower (低的)than that of the top of the sea
D. the temperature of the top of the sea is lower than that of the deep sea
（ ）5. in 1970, five women scientists live in the deep sea for fourteen days. This showed ________.
A. women liked living in the sea B. women couldn’t go down into the sea
C. women wanted to swim in the sea D. women could do the same work as a man
参考答案
一、 根据句意和括号中的提示填上句中所缺单词（9分）
1. friendly 2. to be 3. the nicest 4. more careful 5. dangerous
6. better 7. the heaviest 8. generous 9. solve
二、选择填空（30分）
1----5 BBCAD 6----10 DDBCA 11----15 DBCDA 16----20 CDCBD
三、句型转换（10分）
1. isn’t as 2. what like 3. How clever 4. don’t want 5. Both and
四、改错题（8分）
1. are → is 2. truly → true 3. because → because of 4. advices → advice
5.more → the most 6. Are → Do 7. so → as 8. your → yours
五、完成句子（23分）
1. has long hair
2. hungry have something to eat
3. has a good sense of humo(u)r
4. Are willing to share with
5. is more beautiful than
六、完形填空（10分）
1----5 DACBB 6----10 DCADA
七、阅读理解（10分）
1----5 CABCD
八年级物理月考试题
一：选择题
1 对于蒸发和沸腾这两种汽化方式，下列说法错误的是：( )
A 都是由液态变为气态 B 都需要在一定温度下进行
C 蒸发是在液体表面进行，沸腾在液体内部和表面同时进行
D 蒸发和沸腾都需要吸热
2 夏天扇扇子，人感到凉爽，主要是因为扇来的风：( )
A 降低了周围的空气温度 B 降低了人的体温
C 加快了人身上汗水的蒸发 D 赶走了人体周围的热空气
3 夏天，人站在吊扇下吹风会有凉爽的感觉，如果把一只温度计放在这个吊扇下，温度计的示数将会：( )
A．升高 B。降低
C． 不变 D。以上三种情况都有可能
4 下面说法中正确的是：( )
A 一切气体都可用降低温度方法液化 B 用液化石油气是为了减轻重量
C 烧开水时壶口冒出“白气”不是小水珠
D 夏天自来水管外表面常常湿漉漉的，这是水管漏水造成的
5 关于热现象，下列说法中正确的是：( )
A． 天热扇扇子觉得凉快些，是因为空气的温度降低了
B． 冬天看到人们呼出的“白气”是水蒸气
C． 被100℃水蒸气烫伤比100℃开水烫伤还严重，是因为水蒸气液化放热的缘故
D． 湿衣服变干，是液化现象
6 在26℃的室内将温度计从装有酒精的瓶中取出，它将会：( )
A．立即上升 B。先上升后下降
C．先下降后上升 D。一直不变
7 在卫生间里洗过热水澡后，室内的玻璃镜面变得模糊不清，过了一段时间，镜面又变得清晰起来。镜面上发生的这两种现象的物态变化情况是：( )
A．先汽化，后液化 B．先液化，后汽化
C．只有液化 D．只有汽化
8 闷热的夏天，从电冰箱取出一块冻肉放在台式秤盘中，过一会秤的示数将：( )
A．增大 B。减小
C．保持不变 D。无法判断
9 晶体在熔化过程中：( )
A 温度保持不变，放出热量 B 温度保持不变，吸收热量
C 温度上升，吸收热量 D 温度下降，放出热量
10 下列说法正确的是：( )
A一般物质在熔化和凝固的过程中，温度均保持不变
B物体吸收热量后，温度一定升高
C同一物质的熔点和凝固点相同
D0℃的冰比0℃的水冷一些
11 下列各组物质中，都是晶体的是：( )
A．冰和水 B。铜和固态水银
C．玻璃和石蜡 D。海波和萘
12 图中表示物质的温度随时间的变化图，其中表示晶体凝固的是：( )
13 海波是一种晶体，熔点是48℃，温度是48℃的海波，它的状态：( )
A 一定是固态 B 一定是液态
C 一定是固、液共存态 D 以上三种情况都有可能
14 南极的最低气温可达—88.3℃，科考队员要测量南极的气温，应选用：( )
[几种物质的熔点：酒精—117℃ 水银—39℃ 煤油—30℃ 冰0℃]
A．体温计 B。煤油温度计
C．酒精温度计 D。水银温度计
15 将一盆冰水混合物放在太阳底下，冰开始熔化，当水面还有冰浮着时，则：( )
A 冰的温度升高，水的温度不变 B 冰的温度不变，水的温度升高
C 冰、水的温度都升高 D 冰、水的温度都不变
16 把盛有碎冰块的大试管插入烧杯里的碎冰块中，如图用酒精灯对烧杯底部慢慢的加热，当烧杯中冰块有大半熔化时，则试管中的冰：( )
A．也熔化一部分 B。全部熔化
C．一点都不熔化 D。无法确定
17 放在箱子中的卫生球不见了，发生的物态变化是：( )
A．熔化 B。汽化
C。升华 D。同时升华和汽化
18 在夏天会看到冰棍冒出白色的“气”，这是因为：( )
A 冰棍蒸发产生的水蒸气 B 冰棍升华产生的小冰晶
C 冰棍熔化成小水珠 D 冰棍周围空气中的水蒸气液化而成的小水珠
19 白炽灯炮使用久了，玻璃壁会变黑，这是因为：( )
A． 落上了灰尘 B。 钨丝发生升华现象
C． 钨丝发生凝华现象 D。 发生了升华与凝华现象
20 下列现象中都发生了物态变化，其中属于升华的是：( )
A 卫生球放了一段时间会变小 B 江面上逐渐形成了大雾
C 擦在玻璃上的酒精很快干了 D 冰块吸热后逐渐熔化
21 下面几组物态变化过程，都是放出热量的是：( )
A．熔化、汽化、升华 B。凝固、液化、凝华
C．熔化、液化、凝华 D。凝固、汽化、升华
22 下列物态变化过程中，需要吸收热量的是：( )
A．霜的形成 B。露的形成
C．冰化成水 D。水结成冰
23 为了抗旱，向空中云层中发射“干冰炮弹”，就能实现降雨，这是因为：( )
A 干冰熔化变为水
B 二氧化碳气体迅速液化而成的小液滴
C 干冰在云层中迅速升华又凝华而形成的
D 干冰在云层中升华吸热，使云层中的水蒸气液化成小水滴
24 关于温度计下列说法不正确的是：( )
i. 普通温度计不能离开被测物体观察温度
ii. 体温计的测量范围是35℃-42℃
iii. 常见的温度计都是用水银作测温物质
iv. 常用液体温度计是根据液体热胀冷缩的原理制成的
25 某同学用体温计测得甲的体温是37.5℃，若没有甩过，又用它去依次测量乙和丙的体温，已知乙和丙的实际体温是36.5℃和38.2℃，那么两次测温后，他的记录数据是：( )
A．36.5℃和38.2℃ B。37.5℃和38.2℃
C．36.5℃和37.5℃ D。37.5℃和37.5℃
二：填空题
26 如图所示，是锡的熔化和凝固的图象，根据图象回答：
a) 锡的熔点是______，凝固点是______。
b) 在BC段，锡处于____________状态；在DE段，锡处于________状态。
c) 锡的熔化用了______min，它熔化过程中要______热，但温度_______。
d) 锡从10min到12min这段时间间隔内处于___________状态。
27 居民使用的液化石油气，就是在常温下用_________的方法使石油气变为液体储存在钢罐中的。
28 写出下列物态变化的名称
a) 冬天早晨出来跑步，嘴里往外呼“白气”，是_____现象.
b) 冰雪化成水，是________现象.
c) 洗过的衣服晾干了，是_____现象.
d) 钢水变成钢锭，是_____现象.
e) 夏天，自来水管常“出汗”，是________现象.
f) 掀开沸水锅的锅盖，可以看到有水从锅盖上滴下，这是_______现象。
g) 冬天戴眼镜的人从外面进到暖和的屋子里，镜片上会出现水珠，这是______现象.
三、问答题
29、储存在关好的饭橱里的面包和放在桌子上的面包哪个硬的快些？
答：同样的面包， 硬的快些，这是因为 的空气比 的空气流动
（填快些或慢些），面包里的水分也就蒸发的 ，所以面包硬的快些。
30、请解释下面的实验：取一张牛皮纸，把它的四个角用细绳吊起来，然后向里面装上适量的水，并在下面烧火，看看水会不会沸腾，牛皮纸会不会烧着。
答：水 （填会或不会）沸腾，牛皮纸 （填会或不会）烧着，牛皮纸装水，放在火焰上，火焰放出的热量通过牛皮纸被水吸收，是水 ，因为水（在1个标准大气压下）沸腾时，温度会保持在 ，牛皮纸装水，水渗入牛皮纸面把它湿润了，所以牛皮纸的温度跟水的温度 ，这样的温度低于牛皮纸的着火点，是不会把牛皮纸点燃的。
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