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A．The workers on the underground platforms were replaced by machines.B．It became the f
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听力原文：W: So you are up to some tennis this afternoon or what？
M: Well, to tell you the truth, I'm not feeling so hot today.
W: Come on. How long has it been since we played？
M: A couple of days.
W: A couple of days？ Come on. It's been more than a couple of days.
M: Yeah. I guess you're right. It's been almost a week.
W: It's been exactly a week. And we used to play at least three times this week.
M: I know. Playing right after class was something to look forward to.
W: Yeah. And it was right before dinner. So we built up our appetite.
M: I've just been very busy. I guess. And my stomach is bothering me today.
W: But you look OK to me.
M: Well, I was up late with Steve in the library working on a project. We got to do it by tomorrow. We've been working on it all weekend. And I was drinking a lot of coffee. I guess, I just drank too much.
W: Listen. I took that class last semester. And I could meet you in the library later tonight and help you with it if you want. And then you have time to play tennis this afternoon.
M: Yeah. I guess my stomach doesn't hurt that bad. And I could certainly use your help. But it's also...
W: Is there something else bothering you？
M: Well, to be honest, I'm getting tired.
W: OK, don't worry. You may take some time to rest. We will meet for tennis some time later.
(20)
A．His son hit him on the arm.B．He stumbled over a stone and fell.C．He bumped the arm a
The company management attempted to ______ information that was not favorable to them, but
Large lecture classes are frequently regarded as a necessary evil. Such classes (21) be offered in many colleges and universities to meet high student (22) with limited faculty resource, (23) teaching a large lecture class can be a (24) task. Lecture halls are (25) large, barren, and forbidding. It is difficult to get to know students. Students may seem bored in the (26) environment and may (27) read newspapers or even leave class in the middle of a lecture. Written work by the students seems out of the (28) .
Although the challenges of teaching a large lecture class are (29) , they are not insurmountable. The solution is to develop (30) methods of classroom instruction that can reduce, if not (31) , many of the difficulties (32) in the mass class. In fact, we have (33) at Kent State University teaching techniques which help make a large lecture class more like a small (34) .
An (35) but important benefit of teaching the course (36) this manner has involved the activities of the teaching assistants who help us mark students' written work. The faculty instructor originally decided to ask the teaching assistants for help (37) this was the only practical way to (38) that all the papers could be evaluated. Now those (39) report enjoying their new status as "junior professors", gaining a very different (40) on college education by being on the other side of the desk, learning a great deal about the subject matter, and improving their own writing as a direct result of grading other students' papers.
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