【正文】 on of only 160 000, or about a quarter the estimated number of elephants. Even in national parks where hippos live, protections are failing, in part because many nations had used proceeds from the sale of elephant tusks to pay park police. Now that ine is gone, and some parks have bee hunting grounds. Malawi is among many African nations that support new hippo protections。ll probably move on to other animals with carvable teeth, like walruses or whales. 21. We may infer from the text that the hippo is [A] an endangered animal species. [B] a kind of tourist games. [C] a special fish in rivers. [D] an African elephant. 22. When Dr. Lyster said sadly that the hippo is the fotten beast, he meant that [A] people had fotten to make use of its teeth. [B] the hippo was threatening the existence of elephants. [C] there was an excessive number ofhippos in Africa. [D] the world only remembered to save elephants. 23. We may infer that the hippo hunting and trading are thriving because [A] there has been no strict rules to control these activities before this week. [B] consumers like hippo teeth products better than those made of ivory. [C] there are fewer elephants left in Africa than hippos. [D] hunters find that hippos are easier to kill than elephants. 24. Some African countries tried to protect animals in national parks by [A] getting the locals involved in the trade ofhippos. [B] reinforcing park police force. [C] sharing benefits from parks with the locals [D] turning hunting grounds into national parks. 25. The last sentence implies that walruses or whales may [A] move to other places where foods are available. [B] bee the next victim of hunters39。s a breeze pared with trying to design an anticancer diet. Cardiovascular disease is relatively simple。s the result of normal bodily processes taken to the extreme. Cancer, by contrast, involves changes in the programming of DNA within the nuclei of individual cells. Beyond that, heart disease is an illness that affects a single an system, while cancer is dozens of different diseases that target body parts as radically different as the brain, breast and bone. That being the case it39。t ward off cancer at all. It looks like taking this substance in high doses is not the right thing to do, says a Harvard39。t hurt. 26. We may conclude from the first paragraph that [A] heart disease is mainly caused by abnormal eating habits. [B] cancer is far more difficult to prevent than heart disease. [C] changing the programming of DNA may help treat cancer. [D] designing an anticancer diet is as easy as a breeze 27. Observations and studies of women living in the . prove that [A] American women are in better health than women of Japanese ancestry. [B] there is a clear relationship between highfat diets and breast cancer [C] Japanese women have not yet fully adapted to Western eating norm. [D] there is nothing conclusive in terms of the breast cancerfat link. 28. We can learn from the selection that beta carotene supplements [A] are ineffective in preventing heart disease. [B] may not be effective in preventing cancer. [C] are the most important nutrients we need [D] should normally be taken in low doses. 29. According to health experts, eating more vegetables and [A] will definitely do us no harm whatsoever. [B] is the most effective anticancer diet. [C] provides us with enough beta carotene [D] can protect us against the harms caused by drinking 30. Which of the following questions does the selection best answer? [A] Can food protect us against cancer? [B] Should we believe in educated guesswork? [C] Is beta carotene good for our health? [D] Are Japanese women more likely to get breast cancer? Passage 3 Despite the modem desire to be easy and casual, Americans from time to time give thought to the language they useto grammar, vocabulary, and gobbledygook. And as on other issues they divide into two parties. The larger, which includes everybody from the socalled plain man to the professional writer, takes it for granted that there is a right way to use words and construct sentences, and there are many wrong ways. The right way is believed to be clearer, simpler, more logical, and hence more likely to prevent error and confusion. Good writing is easier to read。 they denounce all attempts at guiding choice。s speech Can Native Speakers of a Language Make Mistakes? [A] Native speakers think their mother tongue a natural product. [B] Native speakers are the best observers of language rules. [C] Mistakes in usage made by native speakers are often misleading. [D] Whatever a native speaker says is correct usage of the language. 33. We can infer from the text that linguists hold that [A] language knows no class distinction among different users. [B] it is wrong to accuse each other over the use of a language. [C] language is under the political influence of a society. [D] it is natural for people to want to use correct language. 34. In the last sentence of paragraph 3, clock reversers,... refer to [A] linguistic authorities. [B] advocates of aristocratic system and oppression. [C] those who desire for rightness of t