生物体细胞种类的增加通过()。
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 man is not interested in the woman"s holiday．
B. The woman is going on holiday with the man．
C. The man is persuading the woman to go to beaches．
D. The woman is looking forward to her holiday．
根据录音，选择合适的答案（） 查看材料
A. He learns body language for work．
B. He knows little about body language．
C. He usually goes on business travel．
D. He travels abroad to learn body language．
根据录音，选择合适的答案（） 查看材料
A. The man has lost his computer．
B. The woman looks unhappy．
C. The man is worried about his fries．
D. The woman broke the computer．
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