单项选择题


Questions 22 to 25 are based on the conversation you have just heard.

A．Correcting examination papers.
B．Teaching an economics course.
C．Researching in the library.
D．Grading homework sets.
<上一题 目录 下一题>
热门 试题

单项选择题
A．He should do the experiment later.B．He must be extremely careful.C．She is willing to do the experiment for him.D．She’s sure he is not right.
A．He should do the experiment later.
B．He must be extremely careful.
C．She is willing to do the experiment for him.
D．She’s sure he is not right.
单项选择题
Magnetic field is an earth phenomenon that ______.
A．regularly changes its strength and axis
B．is relatively more difficult to conduct research on
C．is dynamic and constantly changing
D．is usually analyzed by deep sea sediment
相关试题