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提问人:网友z*****n 发布时间:2022年6月13日 23:34
[单项选择题]

W公司制作的正版音乐光盘每张售价25元,盈利10元。而这样的光盘的盗版制品每张仅售价5元。因此,这样的盗版光盘如果销售10万张,就会给W公司造成100万元的利润损失。 为使上述论证成立,以下哪项是必须假设的

A.每个已购买各种盗版制品的人,若没有盗版制品可买,都会购买相应的正版制品。

B.如果没有盗版光盘,W公司的上述正版音乐光盘的销售量不会少于10万张。

C.上述盗版光盘的单价不可能低于5元。

D.与上述正版光盘相比,盗版光盘的质量无实质性的缺陷。

E.W公司制作的上述正版光盘价格偏高是盗版光盘充斥市场的原因。

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Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the four choices marked [A], [B], [C] and [D]. For questions 8-10, complete the sentences with the information given in the passage. What’s the right activity for me Whoever you are, there’s an activity for you to maintain a "keep fit" lifestyle. And just as getting fitter doesn’t have to mean pushing yourself to the limits of your endurance, you don’t have to be technically brilliant at a particular sport to derive pleasure and health benefits from it. Some people hold back from getting fit because they feel self-conscious about their ability or body and want to find an activity they can do on their own, but organized classes and sports clubs can provide you with support and motivation, as well as a chance to make new friends. If you’re interested in football, hockey or other team sports, for example, many local clubs will have several teams of varying abilities, while there are plenty of aerobics (有氧健身) or yoga classes specifically designed to cater for beginners. You’re never too old to learn to swim, or you can take classes to improve your technique if that’s what’s holding you back. But many activities can be done by yourself, and require neither technical expertise nor much in the way of equipment or expense -just your willingness to give it a go. Here are some of the best, easiest and most popular ways to start getting fit, as well as some suggestions for alternatives, that get you started.Walking Most of us walk at some point each day but we do it far less than we used to. The government calculates there’s been a decline of more than 20 percent in the number of miles walked since the mid - 1980s. 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