9. After the World War I, ____ became the power source of most of industries of the United States. A. petroleum B. electricity C. coal ...

11. National and international ________ is indispensable if victory is to be achieved. A. sociology B. isolation C. solidarity D. solo ...

17. The chairman of the committee was delighted by the almost full ______ of its members at the conference. A. dependence B. absence C. attendance D. enrollment ...

1. There should be enough copies of the novel to _______ the whole class. A. go round B. go out C. go through D. go along with ...

2. 请判断下列句子结构是否正确：Some of the regulars are acquaintances whom we see at work or live in our community. A. 错误 B. 正确 ...

17. With price _______ so much, it is hard for the company to plan a budget. A. fluctuating B. waving C. swinging D. vibrating ...

12. With the sharp rise in examination cheating, many painstaking students ________ the campaign against all kinds of dishonesty. A. approved B. cheered C. clapped D. applauded ...

7. Eventually, people spread through the continent, _________ the entire species. A. wiping out B. wiping off C. wiping away D. wiping up ...

2. We are going to pay for the television by monthly___________. A. installments B. instances C. inspections D. instruments ...

32: The writer has published many books, ( ) are well received by the readers. A: all of whom B: all of which C: all of them D: all of these ...