1. A. scientist　 B. artist　　　 C. musician　 D. invention

10. D.句意为“通过听力学习生词是最好的方法”。这是一个动词不定式短语作主语的句子，其中it是形式主语，指代后面的动词不定式短语。

There have been many great inventions that change the way we live. The first great ___1___ was one that is still very important today-the wheel. This made it easy for man ___2___ heavy things and to travel long distances. For hundreds of years after that， there were ___3___ inventions that had as much effect as the wheel. Then in the early 1800‘s the world started to change ___4___. There was little unknown land left in the world. People did not have to explore much any more. In the second half of the 19th century many great inventions were made. ___5___ them were the camera， the electric light and the radio. These have all become a big part of our life today.

　　 The first part of the 20th century saw more great inventions. The helicopter in 1909. Movies ___6___ sound in 1926. The computer in 1928. And jet planes in 1930. This was also a time when a new ___7___ was first made. Nylon came out in 1935. It changed the kind of clothes people wear. Of course new inventions continued to be made. Man began looking ___8___ ways to go into space. Russia made the first step. Then the United States took another. Since then other countries，including China and Japan， ___9___ their steps into space. In 1969 man took his biggest step away from earth. ___10___ first walked on the moon. This was certainly just a beginning. New inventions will someday allow us to do things we have never yet dreamed of.

9. C.该题用语境推测法。“读和写”与“听和说”是并列关系，应选表示并列关系的连词。but表示转折关系，as long as表示条件关系，都不能被选。and 和 as well as 都是“和”的意思，选and时要翻译成“读写和听说”，同时还得去掉原句中的动词不定式符号to，显然不能被选。

8. A.该题用语法分析法。hear是个及物动词，需要接宾语，when，where，how都是疑问副词，不能充当宾语。

7. B.根据句中提供的语境，“学习自己的语言”与“听说”之间，应选一个表示“依据，按照，通过”的介词。这四个介词中，只有by有此意思。从与hearing people speak it相并列的by seeing what they write短语，运用语感感知法，也能迅速锁定选项。

6. D.该题测试情态动词的用法，用语境推测法。“总是在用第二种语言”，一定是受外界条件影响的结果，属于客观条件逼迫着不得不怎么样，因此，要用have to来表示。

5. B.根据上半句“想要……”，可推测出下半句是“不得不向……要”，要选一个能与ask构成表示“向……要”意思的介词，这四个介词中，只有for.ask for是个固定词组，根据固定搭配法也能锁定正确选项。

4. C.从语法上分析，表示还没有做的事情做宾语时，要用带to的动词不定式；从语境上分析，表示“尽力做某事，设法做某事”时，要用词组try to do sth 来表示。

3. A.该题用逐个排除法。回忆学习母语的方法，马上就能想起来，根本用不着思索(think out)，仔细考虑(think over)，这样就能排除中间两个选项。表示“考虑，对……看法”时，think of和think about可互换使用，表示“想起，记起”时，只能用think of，这样又可排除最后一个选项。

2. D.该题用科学推测法。“按照学习母语的方法学习第二种语言，肯定不难”，不可能是“不容易，学得不快，不简单”。