问题
问答题 简答题
在接合过程中，供体细胞与受体细胞是怎样彼此联系的？
答案
参考答案：
通过性菌毛。
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在接合过程中，供体细胞与受体细胞是怎样彼此联系的？
参考答案：
通过性菌毛。
| 完形填空。 |
| Dick works in a factory. It is ① his home. Every day he ② to work in the morning and back home in the evening. One day, he came home late and didn't look ③ . His wife saw his ④ , and asked him, "Why don't you feel happy? Are you not ⑤ , dear?" "Yes, I'm quite well. But I'm very angry ⑥ the bus ticket was three pence (便士) last week. But today it is two only. " "That's ⑦ ," his wife said. "The bus ticket is cheaper now. You ⑧ save (节省) two pence every day. " But Dick said, "No, you're a fool. I walked to work and back home every day ⑨ .I saved six pence every day, but now I have two pence ⑩ . |
| （ ）①A.to （ ）②A. rides （ ）③A. sorry （ ）④A. bay （ ）⑤A. well （ ）⑥A. so （ ）⑦A. bad （ ）⑧A.can't （ ）⑨A. next week （ ）⑩A. less | B. from B. drives B. happy B. hand B. hungry B. or B. wrong B. mustn't B. last week B. more | C. near C. runs C, strong C. face C. full C. and C. right C. can C. yesterday C.can | D. away D. walks D. ill D. bus D. empty D. because D. must D. must D. today D. much |