7. used to.表示过去常常用“used to +动词原形”。

6. means.注意means(工具、方法、手段) 这本单词本身就是以s结尾的，且单复数同形，若作主语要根据句意来确定是单数还是复数。

5. going to work.注意与前面spend的句型搭配：spend…(in) doing sth 花多少时间或金钱做某事。

4. two hours a day.注意表示单位时间的词“每天(a day)”要放后面。又如：每小时十公里ten kilometers an hour.

3. outside.修饰动词moved要用副词outside；另外，短语outside of是“……的外面”。

2. since.它引出的时间状语常与现在完成时连用。

1. has been.句中无动词，由“是”可知要用be；结合第2题可知要用be的现在完成时态。

4、根据上下文和括号里的汉语提示，在下面的空白处写出正确的单词和短语，使短文意思完整。

　　 Perhaps more than any other people， Americans have come to depend on their cars. The family car (1)______(一直是) a common thing (2)______ (从……以来) the early twentieth century， and it has changed American life. Many people have moved (3)______(外面) of the large cities to the suburbs. Some Americans spend (4)______(每天两小时) or more in their cars (5)______(去上班) and home again. Cars have become the (6)______(工具) of transportation for most Americans going shopping， and even going on vacations.

　　 Americans (7)______(过去常常) like big cars， and gasoline used to be very inexpensive. Recently， (8)______(然而)， the cost of gasoline has increased； smaller cars have become (9)______(更常见)。 Also foreign cars have become very common. Americans have bought (10)______(大量的) Japanese and German cars. They have bought cars from several other countries as well.

　　 「答案与解析」

　　 美国多数人都拥有汽车，因此有“车轮上的民族”之称，本文就是讲美国人使用汽车的一些情况的。

1. among.表示最高级的比较范围，意为“在……中”，一般用of或among，等介词，此处已有首字母a，所以是among.

3、根据短文内容在空格处填入一个适当的单词，使短文的意思完整，需填单词的第一个字母已经给出。

　　 It is well-known that man is much cleverer than any animal. But which is the cleverest a_______(1) the animals？ Some scientists t_______(2) it should be Alex， an African grey parrot. He is unlike any other animal. He can really t_______(3) with people！

　　 When he says “come here”， he really w_______(4) someone to come up to him.“

　　 “Alex is as clever as a c_______(5) of 2 or 3 years old，” says Dr. Pepperberg. “He does not just repeat the s_______(6) he has been taught. He u_______(7) the words！”

　 　Alex can tell about 50 d_______(8) things， name 7 colours and count from 1 to 6. Is the parrot actually thinking in the w_______ (9) how man does？ Nobody can say. But the q_______ (10) is very interesting.

　　 答案与解析」

　　 本文论述了非洲灰色鹦鹉被一些科学家认为是最聪明的动物。