问题
单项选择题
戊肝病毒( )
A．杯状病毒
B．嗜肝DNA病毒
C．缺陷病毒
D．黄病毒
E．微小RNA病毒
答案
参考答案：A
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戊肝病毒( )
A．杯状病毒
B．嗜肝DNA病毒
C．缺陷病毒
D．黄病毒
E．微小RNA病毒
参考答案：A
| 完形填空。 | |||
| Chengdu has a beautiful name, the City of Fog (雾都) in China. Do you know 1 ? Because there is much fog around the city 2 morning. In the morning, some people go to work 3 car. They can't 4 things clearly, so they 5 turn on the headlights (汽车前灯). This is not only the reason (原因) for 6 good name. Chengdu is also the good place 7 have a good time. In Chengdu, there are 8 places of interest. Every year, many people come here for their 9 . It's really a busy and beautiful 10 . | |||
| ( )1. A.what ( )2. A. every ( )3. A. take ( )4. A. hear ( )5. A. need ( )6. A. it ( )7. A. / ( )8. A. many ( )9. A. family ( )10. A. country | B. where B. a B. take a B. listen to B. needs B. it's B. to B. much B. homes B. street | C. why C. last C. by C. See C. want C. their C. in C. little C. study C. city | D. how D. next D. by a D. look at D. wants D. its D. with D. fewer D. vacations D. picture |