A.Because he can still fight despite his age.B.Because more people are taking exercise
A. Because he can still fight despite his age.
Because more people are taking exercises.
C. Because he has won championships in five divisions.
D. Because people are living longer.
M: Oh well, congratulations. I hope you were rewarded handsomely.
W: Well, every bit helps. So, about your lecture, I understand you were talking about extinctions.
M: Yes. Well, the crux of my talk was just that, we tend to think of extinction as a dramatic event, but most species die out over quite a period of time.
W: Why do they die off? I thought they were continuously improving themselves. Natural selection, I think you once mentioned.
M: Ah, but you see while there is natural competition between the species, what determines which species survive is largely by chance.
W: I don't get it. Why do species bother competing?
M: Well, there are short-term advantages. But many species also are helped by others. For example, the common housefly and cockroaches might have died off years ago if not for humans.
W: But you're not saying that humans are so successful merely because of chance?
M: To a certain extent, humans were initially lucky enough to have the right weather conditions and a lack of predators, but now, of course, we survive by ingenuity!
W: So we may never become extinct.
M: NO, because we may be in a crash course to extinction by our continuous exploitation of the environment. We are a relatively young species and our time is not yet overdue.
W: But there are 6 billion of us.
M: Yes, and there're many more houseflies too! Each with the capacity to spread one disease from one person to another in a fast period of time.
(23)
A. She is writing a competitive paper for a scholarship.
B. She is doing a paper.
C. She missed the lecture.
D. She is planning to attend the scholarship award ceremony.
A.He believes that flashy robes attract greater attention.B.He believes that flashy ro
A. He believes that flashy robes attract greater attention.
B. He believes that flashy robes go well with boxing matches.
C. He wants to send a message to the spectators saying he can fight though he's 40.
D. He believes that the spectators love to see him dressed in flashy robes.
听力原文:M: Susan told me you were on a diet, How much weight have you lost?
W: Well,to start with, I weighed 160 pounds. The first two weeks I took off 10 pounds, but then I gained back 3 over the holidays.
Q: How much does the woman weigh now?
(17)
A. 150 pounds.
B. 160 pounds.
C. 153 pounds.
D. less than 150 pounds.