单选题：I don't quite follow what she is saying.

题目内容：

I don't quite follow what she is saying. A．believe
B．understand
C．explain
D．accept

参考答案：

答案解析：

The exercise that the researchers tried on their test subjec

The exercise that the researchers tried on their test subjects wasA．walking bris

分类：理工类题型：单选题

对稳定蛋白质构象通常不起作用的是（　　）。A．氢键 B．范德华力 C．疏水键 D．盐键 E．酯键

分类：理工类题型：单选题

You will find it hard to make friends with people___________A．without pity B．sad

分类：理工类题型：单选题

下列有关产前检查的目的，正确的是（　）A．了解孕妇健康情况 B．了解胎儿发育情况 C．早期发现异常 D．指导孕期卫生 E．预测胎儿性别

分类：理工类题型：单选题

分类：理工类题型：单选题