In Jane’s chimpanzee project, which of the following is not mentioned?

W: Yes, I saw it in the paper. From a 200-foot high building, wasn't it？ I gather the driver had just got out or he'd have been killed, wouldn't he？ M: Oh, yes. I saw the car; it was totally damaged. W: You usually park your car around there, don't you, Bill？ M: Yes, I left it in that very spot a couple of days ago, but yesterday it was parked up the road. W: You were lucky then, weren't you, Bill？ M: Out of luck, you mean! I'd be very pleased if my old ear were smashed to bits. I could claim from the insurance company then, couldn't I？ W: But you used to be so proud of your car, weren't you？ M: I used to be years ago, but now there are all sorts of repairs to be done, and I just haven't got enough spare cash to put it right. W: You can always sell it, can't you？ M: Few people are stupid enough to buy a car in that state, are they？ W: The man whose car was crushed yesterday was very annoyed about it. He'll be given a new car by the builders, though. M: Yes, but his car was a specially-built model that can't be replaced, and there was hardly anything wrong with it, was there？ W: Well, that's life! When people actually want to get rid of their cars, this sort of thing seldom happens, does it？ (20) A．There was a traffic accident. B．A car was smashed by a falling object. C．A car hit someone near the high building. D．A driver was killed in his new car.

(25) A．Jane's writing is only average. B．Jane misspells too many words in her essay. C．Jane shouldn't improve her spelling. D．Jane can't stand to write in her essay.

A．either; nor B．not; only C．between; and D．neither; nor

A．a lot of B．more C．much D．a lilttle of

A、Path B、Access C、line D、track

A: to B; with C; like

A．their mastery of writing novels B．her admiration for them C．they had different writing styles to reveal the world D．her understanding about their works

A．She records lectures. B．She takes notes. C．She asks questions.

"It says that the chimpanzee group that gave rise to HIV… this chimp community resides in Cameroon," said Beatrice Hahn of the University of Alabama, who led the study. "But that doesn’t mean the epidemic originated there because it didn’t," Hahn, who has been studying the genetic origin of HIV for years, said in a telephone interview. "We actually know where the epidemic took off. The epidemic took off in Kinshasa, in Brazzaville." Kinshasa is in the Democratic Republic Congo, formerly Zaire, and faces Brazzaville, in Congo, across the Congo River. Studies have traced HIV to a man who gave a blood sample in 1959 in Kinshasa, then called Leopoldville. Later analysis found the AIDS viros. In people, HIV leads to AIDS but chimps have a version called simian immune deficiency virus (SIV) that causes them no harm. Humans are the only animals naturally susceptible to HIV. AIDS was only identified 25 years ago. The virus now infects 40 million people around the world and has killed 25 million. Spread in blood, sexual contact and from mother to child during birth or breastfeeding, HIV has no cure and there is no vaccine, although drug cocktails can control it. And like so many new infections, AIDS appears to have been passed to humans from animals they slaughtered. SIV has been found in captive chimps but Hahn wanted to show it could be found in the wild too. Her international team got the cooperation of the government in Cameroon and they hired skilled trackers. "The chimps in that area are hunted. It’s certainly impossible to see them. It is hard to track them and find these materials," she said. But the trackers managed to collect 599 samples of droppings. Hahn’s lab found DNA, identified each individual chimp and then found evidence of the virus. "We went to 10 field sites and we found evidence of infection in five. We were able to identify a total of 16 infected chimps and, we were able to get viral sequences from all of them," Hahn said. Up to 35 percent of the apes in some communities were infected. Not only that, they could find different varieties, called clades, of the virus. "We found some of the clades were really, really very closely related to the human virus and others were not," she said. Chimps separated by a fiver were infected with different clades, Hahn said. And a river may have carded the virus into the human population. "So how do you get from southern Cameroon to the Democratic Republic of Congo？" Hahn asked. "Some human must have done so. There is a river that goes from that southeastern comer of Cameroon down to the Congo River." Ivory and hardwood traders used the Sangha River in the 1930s, when the original to-human transmission is believed to have happened. Haha’s study suggests the virus passed from chimpanzees to people more than once. "We don’t really know how these transmissions occurred," Hahn said. "We know that you don’t get it potting a chimp, or from a toilet seat, just like you can’t get HIV from a toilet seat. It requires exposure to infected blood and infected body fluids. So if you get bitten by an angry chimp while you are hunting it, which could do it." Hahn’s study only applies the H1V group M, which is the main strain of the virus responsible for the AIDS pandemic. "It’s quite possible that still other (chimpanzee SIV) lineages exist that could pose risks for human infection and prove problematic for HIV diagnostic and vaccines," her team wrote. According to Hahn, the H A．Cameroon. B．Kinshasa and Brazzaville. C．Congo River. D．Nile River.

Andrew Whiten of St. Andrews University in Fife, Scotland, and his colleagues studied three groups of captive chimpanzees and the ways in which they assumed different techniques for obtaining food. The first group contained a high-ranking female that had been taught to retrieve food from an apparatus by using a stick to push a blockage away, thus freeing the food item. The second group also contained a female expert, but one that had been instructed to lift the blockage with the stick in order to release the treat. The third group was a control group and did not have a local expert. When the experts were reunited with their respective group, the other chimps watched their activities at the food apparatus intently and learned to apply either the poking or lifting technique themselves. Members of the third group, lacking an expert to guide them, failed to figure out the contraption on their own. For the most part, chimps in the first group initially stuck to poking and those in the second group stuck to lifting. But then, unexpectedly, some chimps discovered and began using the other strategy. When the food apparatus was reintroduced two months later, however, the chimps reverted to their group's normal way of doing things. In the case of those animals in the lifting group, this meant discarding a technique (poking) that is actually more natural for chimpanzees than lifting is. "We have shown a non-human species conforming to a group norm, despite possession of an alternative technique that represents the norm of another group," the team writes in a report published online by the journal Nature. "Conformity fits the assumption of an intrinsic motivation to copy others, guided by social bonds rather than material rewards such as food." The phrase "fit in" (Line l, Para. I) most likely means ______. A．suit B．adopt C．adjust D．conform

For a long time, the fact that prehistoric people made【10】was considered to be one of the major【11】distinguishing them from other creatures.【12】pointed out earlier, I have watched chimpanzees【13】grass stems in order to use them to probe for termites. It is true that the chimpanzee does not【14】tools to "a regular and set pattern" —but then,【15】people, before their development of stone tools, undoubtedly poked around【16】sticks, and straws, at which stage it seems【17】that they made tools to a set pattern either. It is because of the close【18】in most people's minds of tools with humans【19】special attention has always been focused upon any animal able to use an object as a tool: but it is important to realize that this ability, on its own, does not necessarily indicate any special intelligence in the creature【20】 (1) A．species B．specie C．speciman D．specimen

A．her B．him C．herself D．himself