5. America is the world’ s largest producer of electricity, but stil it has to import electricity from Canada. A. 错误 B. 正确 ...

16. After the Civil War, the United States saw great developments in (). A. agriculture B. economics C. culture D. politics ...

18. The House of Representatives has 435 members plus a nonvoting representative from Puerto Rico and the District of Columbia. A. 错误 B. 正确 ...

10. There are nearly 3100 state parks and recreation areas in the USA. A. 错误 B. 正确 ...

6. Small businesses include most of the farmers, a large proportion of the service industry, and self-employed people. A. 错误 B. 正确 ...

11. Day-to-day family leisure activities include the following activities EXCEPT (). A. going to a restaurant for dinner B. visit Disney World C. barbecuing D. shopping malls ...

3. Junior college in America is (). A. two-year college B. four-year college C. three-year college D. five-year college ...

14. In the USA, the most popular sport in antumn is baseball. A. 错误 B. 正确 ...

7. The tenure of office of federal judges is for life. A. 错误 B. 正确 ...

1. In 1920, the USA had only 10 radio stations. A. 错误 B. 正确 ...