4. We should never ______ the value of knowledge.

A. admit B. ignore C. upset D. worry

【答案】B

【解析】考查动词。A. admit 承认； B. ignore忽视；C. upset 使烦恼； D. worry担忧。句意：我们从来不要忽视知识的价值。答案为Ｂ。

5. I am _______ to you for the chance you gave me to express my feelings.

A. helpful B. hopeful C. grateful D. useful

【答案】C

【解析】考查形容词。A. helpful有帮助的； B. hopeful有希望的；C. grateful 感激的； D. useful有用的。句意：我感激你给我表达感情的机会。ｂｅ　grateful　ｔｏ　ｓｂ．对某人感激，可知答案为Ｃ。

6. I think you should have given him some support, however much you __________ with him.

A. disagreed B. agreed C. approved D. supposed

【答案】A

【解析】考查动词。A. disagreed 不同意； B. agreed同意；C. approved批准；D. supposed假定。我想你应给他些支持,不管你有多么不赞同他的看法。可知答案为Ａ。

7. ---Have you come to our town before?

---No, this is the first time I _______ here.

A. was B. have been C. came D. am coming

【答案】B

【解析】考查固定句式。句意：---你竟然知道我们小镇吗？---不知道，这是我第一次来这里。根据固定句型It/This is the first/second/third time that 主语 + has/have been...。此处应选用现在完成时。可知答案为Ｂ。

【名师点睛】

1.It/This/That is the first(second---)time that 主语+现在完成时态+其他。意思是：第几次做某事了。如果把is改成was，则后面用过去完成时态。It's the third time that I have come to the Summer Palace.这是我第三次来到颐和园。

2.It's (high) time that 主语+一般过去时态+其他。现在是该做某事的时间了。It's high time that we had lunch.现在是我们该吃午饭的时间了。

3. It is/has been+一段时间+since 主语+一般过去时态+---。自从---有多长时间了。在这个