．We can draw a conclusion from the passage that ________．

　　A．we had better not buy medicines online

　　B．more and more people will buy products online

　　C．medicine companies don't pay much attention to counterfeit drugs

　　D．it is very cheap and convenient to buy medicines online

　　答案　A　[推理判断题。从第四段可知，网上销售的药品，假药多达百分之五十。由此可推知，我们最好不要在网上购买药物。因此A项正确。]

　　．What is the main idea of the last paragraph?

　　A．It shows the danger of counterfeit drugs.

　　B．Special tracking codes for drug packages are used to identify counterfeits.

　　C．Some measures are being taken to fight counterfeit drugs.

　　D．It reveals the reasons why counterfeit drugs are widespread.

　　答案　C　[段落大意题。文章最后一段主要说明了人们采取了一些措施来与假药作斗C项。]阅读理解阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。If the earth's population is in growth at this rate , there will not be enough resources. By the middle of the 21st century, if present trends continue, we will have used up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the crowded conditions on the earth will make it necessary for us to look for open space somewhere else. But none of the other planets in our solar system are capable of supporting life at present. One possible solution to the problem, however, has recently been suggested by American scientist, Professor Carl Sagan.

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