Question

几道数学题和英语题。。求助！！

数学：（过程）
（1）：
1-2+3-4+…+99-100

英语：
In China, we put _____ name_____.
A .last;last B:first;first
C:first;last D:family;first

She is a new student.(改为否定句）
She_____a new student.

8+9?
_____eight____nine?

这是我的身份证号。
This is _______ ______ ______ _______.

His family name is Green.(改为同义句
____ _____his____num.

She is A new student at school.(改为一般疑问句）
_____ ____a new student st school?

根据句意及首字母提示填空。
A c______ can tell you the time(时间）,
I can a______ your question.
Five and three is e_______.

Answer 1

数学题：
看做：1-2，3-4。。。99-100
实际上就是50个-1相加，结果为-50
英语：
D
isn't
is add
my ID card number

is her
clock ask eight

Answer 2

1、后一个减前一个等于-1，共50个~~~所以等于-50
2、A
3、she is not a new student
4、plus plus
5、this is my ID card number
6、Green is his family name
7、is she a new student at school
8、clock ask eight