Question

告诉我原因和翻译为什么其他选项错了？

1.we had quite many difficulties with our big-size classes,___how teachers can effectively help individual students is not the least.
A of which B including C besides D beyond
选A，告诉我原因和翻译为什么其他选项错了？
2.Mr.barren doesn't think that all bad language should be allowed. In his opinion,there are ___that should be kept up.
A degrees B levels C limits D standards
选D，告诉我原因和翻译为什么其他选项错了？
3.____he will leave for Beijing.
A it will not be long before B it is before long that
C it is before long since D it was before long when
选B，告诉我原因和翻译为什么其他选项错了？
4.The Wenchuan earthquake and the disaster___caused have become a big concern all over the world.
A what B which C it D /
选C，告诉我原因和翻译为什么其他选项错了？
5.--where is tom?
--well,he___you___here. Otherwise he would come down right now.
A didn't know , were B hasn't known, are C doesn't know, are D hadn't known, were
选C，告诉我原因和翻译为什么其他选项错了？

Answer 1

你的问题又多又复杂还没分。。。

___________________________

翻译：
1，我们各个班级规模很大，这给我们带来很多难题，其中最重要的一个就是，老师们如何才能有效地帮助到每一个学生。

2，Barren 先生认为并非所有的脏话都可以说。在他看来，应该有一个可以遵循的度（标准）。

3，不久之后他就将前往北京。

4，汶川大地震和它所造成的灾害在全世界都引起了广泛的关注。

5，--Tom在哪？
--嗯，他不知道你在这儿。否则他现在就应该已经下来了的。
______________________________________________________

1, 用of which是因为 not the least.

not least of =not the least of = a phrase used when you are giving an important reason for something, or an important example of something 部分的;尤其(用于陈述重要理由或举出重要例子)。

后面这句话倒装了，你把它正过来看就明白了：
not the least of which is how teachers can effectively help individual students
which 引导一个从句，指代前面的difficulties。

2，根据这句话的意思选的。

3，it is before long that 从句是个固定搭配，意思是“不久以后，。。。”后面从句用将来时

4， the disaster it caused=the disaster which/what it caused，省略了引导词，但it不能省掉

5，世态问题。问答都是一般现在时。