根据录音，选择合适的答案（） 查看材料
A. They should pay a little money to attend．
B. Only important ones should be invited．
C. They need to donate money for the anniversary．
D. They have to give presentations．
分化细胞重新分裂回复到胚性细胞这种现象()。
A. 细胞分裂
B. 减数分裂
C. 分离
D. 分化
E. 去分化
根据录音，选择合适的答案（） 查看材料
A. The woman has done something wrong．
B. The man wants the woman to find another job．
C. The woman can"t make a living now．
D. The man will offer some help to the woman．
根据录音，选择合适的答案（） 查看材料
A. He had a terrible vacation．
B. He would like to have a rest．
C. He will never go travelling again．
D. He has recovered from tiredness．
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