地点、内容、类别。小题3中astronomy为名词修饰名词science，表示science的内容为astronomy。故填astronomy。

结合语境，使用单词的正确形式填空。

6. We need a central bank that is __________ (depend) of the government.

7. __________ (judge) from her last letter, they are having a wonderful time.

【答案】6. independent 7. Judging

【解析】

【题详解】

考查形容词。句意：我们需要一个独立于政府的中央银行。be independent of独立于..。故填 independent。

【7题详解】

考查动词。句意：由她上一封信来判断，他们过得很愉快。Judging from为习惯短语，在句中作状语。首字母需要大写。故填Judging。

结合语境，填入适当的单词补全句子。

8. I'm writing in response __________ your letter of September .

9. It's serious. We'll have to operate__________ him immediately.

70. The twins are so alike that their parents mistake one __________ another.

【答案】8. to 9. on 10. for

【解析】

【8题详解】

考查介词。句意：我写这封信是为了回复你9月日的来信。in response to.回应......。故填to。

【9题详解】

考查介词。句意：病情很严重。我们得马上给他做手术。operate on sb给某人做手术。故填on。

【10题详解】

考查介词。句意：这对双胞胎长得太像了，以至于他们的父母都认错。mistake sb for sb把某人误认为某人。故填for。

11. She __________(选举) cheer-leader of our team for the second time.

12. We must read as much as possible to __________(扩大) our vocabulary.

13. It is a great pleasure to have such an __________(热情的) group participating in our project.

14. Her encouragement is an important__________(因素) of my success.