以下人口迁移现象主要由自然生态环境因素影响而出现的是
| A．三峡建设，百万移民 |
| B．我国80年代知识青年大量返城 |
| C．鄂尔多斯地区由于沙漠化扩展，部分居民被迫南迁 |
| D．“二战”后，美国接受了大批来自其他国家的科技人才和著名学者 |
----So you are not spending your holiday in Wuhan this year.
---No, _______.
| A．everywhere in Wuhan |
| B．somewhere in Wuhan |
| C．somewhere but in Wuhan |
| D．anywhere but in Wuhan |
The temperature can fall to －50°C. _____ is, 50°Cbelow freezing point.
A. Which B. It C. This D. That
Since then I a member of the family and never from them.
| A．have be come; will I separate |
| B．have be come; I will separate |
| C．have been; will be separated |
| D．have been; I was separated |
---Will you please spare me a few minutes to accept my interview, Mr Yang Liwei now?
---________. But I’ll be free this evening. Would you mind?
| A．No, I don’t | B．Yes, with pleasure |
| C．I’m afraid not | D．Yes, I’d be glad to |
Some famous singers live on the _________ from their record sales.
| A．salary | B．value | C．bill | D．income |