简述DNA翻译产物。
参考答案：
一、蛋白质
二、酶
三、催化性能与结构关系
多数脊髓炎患者病前有感染、腹泻的病史。()
—What do you think of the Eiffel Tower?
—Splendid. When I was in France, I it.[ ]
A. have visited
B. had visited
C. could visit
D. visited
