题目：
根据句意及所给提示完成单词。
1. That sounds i______. I like it very much.
2. —How o______ do you come to school late?
—Never.
3. The teacher gave us some ______ (建议) on how to learn English.
4. I had a toothache. So I had to go to the d______.
5. What are you ______ (计划) to do there?
6. ______ (袋鼠) come from Australia.
7. It's i______ for us to learn English well.
8. U______, he was hurt (受伤) in the car accident.
9. We should try to keep the b______ of nature.
10. The workers ______ (建设) a bridge over the river.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：miRNA是非编码的单链小分子RNA，在进化上高度保守，不影响转录本的稳定性，通过翻译抑制调控基因表达；siRNA是针对编码区的双链小分子RNA，每个转录本都可能有很多个siRNA，是通过降解目标靶（即mRNA....
