题目内容

核酸变性时紫外吸收值明显增加。

A. 对
B. 错

查看答案

搜索结果不匹配？点我反馈

更多问题

下面哪个不是“社交达人”的表现？

A. Self-confident.
B. Lack of security.
C. Optimistic.

When you want to call on somebady, you had better.

A. go quickly.
B. go there earlier.
C. call him up first and reach an arrangement.

What gifts to bring when you visit someone in America?

A. Flower.
B. Red envelope.
C. Wine.
D. Biscuit.

Social phobia是社交恐惧症的意思。

A. 对
B. 错