Theteacherexplainedasecondtime, &nbs

The teacher explained a second time, the students should have difficulty in doing the experiment.A.althoughB.in caseC.so thatD.but

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。

这个解释是对的