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What isn't said about the case with PCBs？A．An accumulation of PCBs in the human body is th

What isn't said about the case with PCBs？

A．An accumulation of PCBs in the human body is the direct reason of the cancer and other severe disorders.

B．PCBs can't be disintegrated using conventional waste-treatment ways.

C．PCBs are degraded by natural processes very slowly.

D．PCBs have been found in high contents in the fatty tissues of fish.

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发布时间：2020-07-14

更多“What isn't said about the case with PCBs？A．An accumulation of PCBs in the human body is th”相关的问题

第1题

听力原文：M: I have some news about Barbara that might interest you.W: Are you talking abou

听力原文：M: I have some news about Barbara that might interest you.

W: Are you talking about the great new job she found？

M: So you know about it too？

Q: What can we assume about the man？

(18)

A．He isn't interested in the news.

B．He's surprised that the woman knows.

C．He was also going to look for a job.

D．He thinks that the woman made a mistake.

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第2题

A．A person who spends all day working in a laboratory.B．A person who doesn't talk abou

A．A person who spends all day working in a laboratory.

B．A person who doesn't talk about anything but science.

C．A person who doesn't play games well and isn't attractive to the opposite sex.

D．A person who is not lacking the sense of humor.

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第3题

听力原文：W: There must be a thunderstorm in some place, because the picture isn't very sha

rp and the sound isn't clear.

M: I think you are right. They said on the radio last night that a storm was coming in from the mountains and the morning paper forecast heavy rain.

Q: What are the man and the woman doing？

(5)

A．Looking at the photos.

B．Listening to the radio.

C．Watching television.

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第4题

According to what Dr. Jonathan Finkelstein has said in Paragraph Five, we can infer thatA．

According to what Dr. Jonathan Finkelstein has said in Paragraph Five, we can infer that

A．there isn t any harm or side-effect of using antibiotics.

B．antibiotics help doctors remarkably in practice since the mid-90s.

C．there may be some bad effects of using antibiotics we don"t know.

D．doctors have to point out the risks of using antibiotics in treatment.

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第5题

听力原文：M: Mary is fond of camping, isn't she？W: Yes, she often goes camping for weeks at

听力原文：M: Mary is fond of camping, isn't she？

W: Yes, she often goes camping for weeks at a time.

What do we learn about Mary from what the speakers said？

A．She hasn't gone camping for weeks.

B．She likes long' camping trips.

C．It takes her a long time to plan her camping.

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第6题

听力原文：M: Isn't that a new restaurant？ Right across from our office, too! I wonder how i

t is!

W: Sam said the food was just great. Shall we have lunch there this afternoon？

M: Sorry, but I have a meeting at noon and I'm sure it's going to be a long one.

W: Well then, maybe we could go and get a snack after work this evening.

What are the speakers mainly discussing？

A．A memo from Sam.

B．Staying back to finish work.

C．A meeting later in the day.

D．A new eating place.

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第7题

Roger: Hey Andrew, we've just received that order of books from MacPherson. Andrew: Great

news. They finally got here. ______. Roger: Yes, they said the ship got held up in Bombay. Anyway, they're here now.

A．Did the deliverers give any explanation about the delay？

B．I didn't expect them to arrive here so soon.

C．There isn't any damage to the shipment. Thank goodness!

D．It really took a long time. Well, what happened？

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第8题

听力原文：M: A lovely day, isn't it？W: It is.M: It seems it will be fine all day.W: I think

听力原文：M: A lovely day, isn't it？

W: It is.

M: It seems it will be fine all day.

W: I think it will be a dry day. There's hardly a cloud in the sky.

M: We'll have a heat wave in the afternoon. I'm afraid.

W: It's very hot today. No wind at all.

M: You're right. There's hardly a breath of air.

W: By the way, did you watch the weather forecast on the television？

M: Yes, it is said a high pressure area would remain to the southwest of England. There would be a little rain or showers here or there, but bright weather the rest of the day.

What's the weather like today？

A．Dry and windy.

B．Fine and dry.

C．Cloudy and dry.

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第9题

听力原文：M: A lovely day, isn't it？W: It is.M: It seems it will be a fine all day.W: I thi

听力原文：M: A lovely day, isn't it？

W: It is.

M: It seems it will be a fine all day.

W: I think it will be a dry day. There's hardly a cloud in the sky.

M: We'll have a heat wave in the afternoon. I'm afraid.

W: It's very hot today. No wind at alt.

M: You're fight. There's hardly a breath of air.

W: By the way, did you watch the weather forecast on the television？

M: Yes, it is said a high pressure area would remain to the southwest of England. There would be a little rain or showers here or there, but bright weather the rest of the day.

What's the weather like today？

A．Dry and windy.

B．Fine and dry.

C．Cloudy and dry.

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第10题

Bill couldn't understand what the boy was saying because ______.A．he didn't know much abou

Bill couldn't understand what the boy was saying because ______.

A．he didn't know much about children

B．the boy was crying and making noises

C．the boy was too afraid to speak clearly

D．the boy wasn't Sam