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A．They need to listen to their kids with great interest and attention.B．They should te
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听力原文： Our topic today is about fleas that plague all of us who have cats and dogs in our homes. You may be surprised to find out that there are about 1,500 species of fleas, and that each species has its own preferred host. Fleas are, in fact, quite adept at finding their hosts. In an experiment, 270 fleas from rabbits were marked and then let loose in a large meadow. After a few days, a full half of the fleas had found rabbits to live on. Fleas also have a very interesting flexible diet. They can go for many months without eating if they have to, and they will change hosts in order to get more food, even if they don't like the taste of their new host as much as the old! Their jumping ability is incredible, too. You may know this from your own experience. Some fleas can jump as high as 13 inches, which is quite a lot for such a small creature. This jumping ability comes from their relatively large muscular legs that are equipped with resilin, a kind of natural rubber. The elastic properties of this resilin have not yet been equaled in any artificial substance. Though the fleas on your cat or dog are not dangerous to you, some fleas carry diseases. It is the rat flea that is responsible for carrying some fatal plagues. These fleas have been in part responsible for the Great Plague of Europe in 500 A.D. that spread from Ethiopia to Byzantium to Europe. They are also part of the cause of Black Death in China and Europe.
(33)
听力原文：W: In my first year at university, I had three roommates, all from different countries.
M: That mustn't have been great for you to get acquainted with different custom and cultures in different countries. Did you stay in touch with them？ What are they all doing now？
Q: What are the speakers talking about？
(19)
听力原文：W: I come to remind you of a meeting scheduled for 10 o'clock this morning.
M: I am available at that time.
W: That is great. The meeting will be held in the manager's office, do you know where the office is？
M: Yes, I have been there before.
W: Will you need any additional equipment set up for your presentation？
M: No. I have a laptop computer. (23) As long as I can hook that up to the office, I should be all set. Are you responsible for the minutes？
W: Yes. Since I am new here, I am not very familiar with the work until now. Can I consult you with a few questions？
M: Sure.
W: Should I record every word that everyone says？
M: No, you needn't. You just make a note of the topics.
W: And should I type out the minutes from the notes？
M: Yes, of course. (24) In fact, the most important thing is to draft a reasonable agenda, which must be centered on the topic of the meeting and take all the factors into consideration.
W: I see.
M: For the preparation work, you need to notify every person who should attend the meeting. Especially, you need by inform. related staff members who are responsible for some specific affairs at the meeting. (25) And after the meeting, you need to clear up their reports and decisions made at the 'meeting.
W: Thank you very much. You have done me a great favor.
M: Not at all. That's what I should do. See you then.
W: See you.
(20)
A．Know the limit of your temper.B．Tell them don't do the same things again.C．Give them
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