问题
选择题
在腐乳制作过程中，经检测发现一个毛霉细胞中的RNA比一个青霉细胞中的RNA多，最有可能是[ ]
A．DNA的含量毛霉比青霉多
B．DNA的含量青霉比毛霉多
C．合成的蛋白质毛霉比青霉多
D．合成的蛋白质青霉比毛霉多
答案
答案：C
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在腐乳制作过程中，经检测发现一个毛霉细胞中的RNA比一个青霉细胞中的RNA多，最有可能是[ ]
A．DNA的含量毛霉比青霉多
B．DNA的含量青霉比毛霉多
C．合成的蛋白质毛霉比青霉多
D．合成的蛋白质青霉比毛霉多
答案：C
| 用所给词或词组的正确形式填空（每个只能用一次，其中有三项是多余的）。 | |
2. John and Jack are both seven. They are ________________. 3. The ________________ contains hundreds of letters. 4. Shall I ________________ at the next stop? 5. He can't do it himself. Will you please help ________________? 6. Where is Mike? He ________________ under the tree. 7. My brother ________________ to school in the morning. 8. We ________________ on the coming Children's Day. 9. Last week, we went to the farm and ________________ carrots there. 10. There is a new supermarket near my home. The ________________ in it are beautiful and delicious. |