下述药物中，对治疗病毒感染无效果的是（）
A.干扰素
B.抗生索
C.聚肌苷酸
D.黄连、黄芩
E.三氮唑核苷
参考答案：B
同义句转换。
1. The radio went wrong yesterday.
____________________________________
2. They were injured in the accident.
3. He can't memorize all the words in 20 minutes.
4. You can watch TV after finishing your homework.
5. Unless you keep ice cream in a fridge, it melts.
非线性相互作用就是所谓的（）。
A.耦合作用
B.促进作用
C.协助作用
D.反作用
