【文章內(nèi)容簡(jiǎn)介】 tion. D． A chance to have a different cultural environment. 46． According to this passage, we can know that ________. A． mainland high school graduates need an admission interview when they enter a university B． most mainland high school students prefer to enter a university in Hong Kong C． mainland universities have no scholarships D． most of the HKU applicants in the mainland are very excellent 47． If high school graduates want to enter Hong Kong University, they must ________. A． have an interview first B． be born in a rich family C． graduate from an excellent school D． have an admission interview after they pass the written test 48． The main idea of this passage is _______. A． the scholarship of the universities in Hong Kong is very high B． the petition of entering a Hong Kong university is very tough C． excellent students in the mainland now have a new choice for higher education D． to study in a university in Hong Kong is better than to study in the mainland C Some unfortunate people are rather attractive to mosquitoes, while the smell of some lucky people drives the bloodsuckers away. Now the smelly chemicals from the sweat of these lucky people have been identified by researchers, who are testing its effectiveness as a natural mosquito repellent (驅(qū)蚊劑 ). Everybody produces a mixture of chemicals with smells in their sweat, some of which attract biting insects. But people who do not get bitten also produce smelly chemicals that appear to mask the smells of the attractive chemicals. This masking is very effective in avoiding a mosquito’s bite, explains James Logan, a scientist who carried out the research with his colleagues. These helpful chemicals probably occur naturally in everybody’s sweat but some people have a much higher ratio (比例 ) than others. “It’s very exciting,” Logan says, “because these are totally natural chemicals with an effectiveness that pares favorably to other chemicals such as DEET, which is the best repellent available but has unwanted side effects.” A key chemical identified by Logan as a repellent is also “a natural food additive which has been proven safe”. He says, “And because it can be made by plants, it may one day be possible to massproduce it cheaply.” The repellent is currently being tested by 16 volunteers in Africa. Meanwhile, the researchers are testing the repellent against other biting insects. 49． Which can be concluded from this passage? A． Mosquitoes like to suck attractive people. B． Only some people produce a smelly substance in their sweat C． The cost of plantrelated products can be low. D． Some chemicals contained in people’s sweat can be eaten as food. 50． What is the main idea of this passage? A． Some people are luckier than other people B． Scientists help us to avoid the inconvenience of the biting insects C． Scientists have found a natural antibiting substance in people’s bodies. D． The natural mosquito repellent is good for people. 51． Why are some people less attractive to mosquitoes? A． Because they have less sweat B． Because their sweat contains a particular chemical. C． Because the ratio of their natural mosquito repellent is much higher D． Because they are less attractive 52． Which of the following statements is NOT true according to this passage? A． Scientists are doing experiments with volunteers in Africa. B． The natural mosquito repellent is only used to deal with mosquitoes C． DEET is the best repellent available now D． All people might produce chemicals that can mask the mosquitoattracting substance. D Nursing at Beth Israel Hospital produces the best patient care possible. If we are to solve the nursing shortage, hospital administration and doctors everywhere would do well to follow Beth Israel’s example. At Beth Israel each patient is assigned to primary nurse who visits at length with the patient and constructs a fullscale health account that covers everything from his medical history to his motional state. Then he writes a care plan centered on the patient’s illness but which also includes everything else that is necessary. The primary nurse stays with the patient through his hospitalization, keeping track with his progress and seeking further advice from his doctor. If a patient at Beth Israel is not responding to treatment, it is not unmon for his nurse to propose another approach to the doctor. What the doctor at Beth Israel has in the primary nurse is a true colleague. Nursing at Beth Israel also involves a decentralized nursing administration。 every floor, every unit is a selfcontained anization. There are nurse managers instead of head nurses。 in addition to their medical duties they do all their own hiring and dismissing, employee advising, and they make salary remendations. Each unit’s nurses decide among themselves who will work what shifts and when. Beth Israel’s nurseinchief ranks as an equal with other vice presidents of the hospital. She is also a member of the Medical Executive Committee, which in most hospitals includes only doctors. 53． Which of the following is the character of the nursing system at Beth Israel Hospital? A． The doctor gets more active professional support from the primary nurse. B． Each patient is take