根據(jù)句意及括號(hào)內(nèi)的漢語提示寫出所缺單詞(每空1分,共10分)
1. I am a ­__________________(學(xué)生)in Yucai School.
2. Shanghai is a big __________________(城市).
3. There are _____________________(二十九)classes in our school.
4. My sister is a teacher in the ___________________(大學(xué)).
5. Wang Lin’s father is a doctor at the __________________(醫(yī)院).
6. His sister is a _________________(秘書)at the factory.
7. There is an English-Chinese _____________(詞典)on the desk.
8. Sam’s answer is ______________(正確的).
9. We often play sports in the _________________(體育館).
10.There are some new ________________(建筑物)in our town.
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(2)作為目的基因載體的細(xì)菌質(zhì)粒往往要帶有一個(gè)抗生素抗性基因,該抗性基因在基因工程中主要用于_____________________________________________________。
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