Question

The teacher explained a second time,           the students should have difficulty in doing the experiment.

A．although

B．in case

C．so that

D．but

Answer 1

B

解析试题分析：句意:老师又解释了一次，以防学生们在做实验时有困难。Although尽管；in case万一；so that以便；but但是。根据句意故选B。
考点：考查连词的用法。
点评：本题难度适中。判断从句中用哪个连词，需用记住连词的用法，在句中的作用，连词也是高考的热点，需要考生平时多练习。需要考生会分析句子成分理解句意。
即学即练：—Why were you absent yesterday?
—I caught a cold,___________I had been walking around in the rain. A.but       B.so       C.and       D.for
解析：D。考查表示缘由的连词。for在这里表示补充原因，因此选D。