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有A、BG两个电脑显示器，已知旧显示器A的宽与高的比例是4：3，新显示器B的宽与高的比例是16：9，如果两个显示器的面积相同，问B的宽与A的宽度之比是：

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听力原文：W: There is a limit of three books for each person. Do you still want to have them？
M: Fine, thanks. I'll be certain to return them on time.
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Although an increasing number of companies began to support limitation on emission, there

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回头背书是指背书人以及前手债务人为背书人所作的背书。它以票据上既存的债务人为受让人，因此又称还原背书或逆背书。()

A. 正确
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有A、BG两个电脑显示器，已知旧显示器A的宽与高的比例是4：3，新显示器B的宽与高的比例是16：9，如果两个显示器的面积相同，问B的宽与A的宽度之比是：

听力原文：W: There is a limit of three books for each person. Do you still want to have them？M: Fine, thanks. I'll be certain to return them on time.Q: Where did this conversation take place？(16)

Although an increasing number of companies began to support limitation on emission, there

According to this passage, what is the major reason for its retail sales to drop？

回头背书是指背书人以及前手债务人为背书人所作的背书。它以票据上既存的债务人为受让人，因此又称还原背书或逆背书。()

听力原文：W: There is a limit of three books for each person. Do you still want to have them？
M: Fine, thanks. I'll be certain to return them on time.
Q: Where did this conversation take place？
(16)