[外语类试卷]职称英语(卫生类)B级模拟试卷19及答案与解析.doc
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1、职称英语(卫生类) B级模拟试卷 19及答案与解析 一、 词汇选项 (第 1-15题,每题 1分,共 15分 ) 下面每个句子中均有 1个词或短语在括号中,请为每处括号部分的词汇或短语确定1个意义最为接近选项。 1 The price of vegetables varies according to the weather. ( A) changes ( B) rises ( C) falls ( D) jumps 2 The hands of the clock showed that it was time for dinner. ( A) pointers ( B) fingers (
2、 C) legs ( D) toes 3 The meat tasted so unpleasant that Jane threw it away in disgust. ( A) with pleasure ( B) with strong dislike ( C) in despair ( D) in great disappointment 4 Mary was one of the principal organizers of the Artists Guild. ( A) planners ( B) employees ( C) actors ( D) recipients 5
3、Parents should realize that “example is better than precept.“ ( A) instruction ( B) education ( C) imagination ( D) morality 6 Flattery will get you nowhere. ( A) criticism ( B) screamings ( C) sweet words ( D) recitals 7 An educationist should understand childrens psychology very well. ( A) mind (
4、B) heart ( C) brain ( D) physics 8 He picked a textbook from the bookshelf and then commenced to read. ( A) directed ( B) commented ( C) committed ( D) began 9 We were relieved to hear that you had arrived safely. ( A) relaxed ( B) worried ( C) released ( D) joyful 10 You possess affluence, but it d
5、oesnt mean you can have everything in hand. ( A) influence ( B) fluent ( C) wealth ( D) relationship 11 Because noises modulate radio frequency, radio stations use a band of frequencies to prevent interference with other stations. ( A) govern ( B) adapt ( C) temper ( D) renovate 12 Governments shoul
6、d rule only with the consent of the governed. ( A) content ( B) conquest ( C) support ( D) agreement 13 The fact that Chinese characters are associated with ideas, not sound, would make it a fine written international language. ( A) connected with ( B) involved in ( C) realized by ( D) assisted by 1
7、4 She broke a vessel in anger at a man who came selling things at her door. ( A) ship ( B) container ( C) tube ( D) boat 15 A cup of whole milk provides roughly one hundred sixty-six calories of energy. ( A) discreetly ( B) approximately ( C) barely ( D) coarsely 二、 阅读判断 (第 16-22题,每题 1分,共 7分 ) 下面的短文
8、后列出了 7个句子,请根据短文的内容对每个句子做出判断:如果该句提供的是正确信息,请选择 A;如果该句提供的是错误信息,请选择 B;如果该句的信息文中没有提及,请选择 C。 15 Supped-up(效力增强了的 ) enzymes that flush poisons out of cells more efficiently than their natural counterparts(对应的人或物 ) could alleviate some of the severe side effects of chemotherapy and so improve the chances of
9、 curing cancers. Many anticancer drugs attack tumor cells because they divide more rapidly than healthy cells. But some vital healthy cells also divide faster than normal, and these are destroyed as well. The most vital cells caught in the chemical cross-fire are those made in the bone marrow(骨髓 ).
10、Under normal circumstances, these mature into platelets(血小板 ), which are vital for wound-healing, and white blood cells that fight infections. If levels of these cells fall, patients become dangerously vulnerable to infection and can suffer such severe internal bleeding that treatment has to be stop
11、ped. Surviving cancer cells can then re-grow and reduce the effectiveness of the therapy. Bill Fehl and his colleagues at the University of Wisconsin Medical School have engineered an enzyme that could make bone marrow cells resistant to the cancer drugs, so higher doses can be given and side effect
12、s reduced. The idea is to take healthy bone marrow cells from patients before they begin chemotherapy, then equip these cells with the genes that make the enzyme drug-resistant. When returned to the patient, the improved bone marrow cells could then withstand heavy doses of the drugs. The natural ve
13、rsion of the enzyme called glutathione Stransferase(谷胱甘肽 S转移酶 ) is produced mainly in the liver and catalyses(催化 ) the breakdown of compounds that might otherwise damage DNA in cells. GST also neutralizes(中和 ) the toxic breakdown products of anticancer drugs, which makes it suitable for protecting b
14、one marrow cells. But natural GST does not work efficiently enough to avoid being swamped by high doses of drugs. GST catalyses a reaction between potentially toxic compounds and glutathione a peptide (肽 ) produced in almost all cells of the body. The GST molecule has a cavity, or “active site“, whe
15、re the two molecules are brought close enough to react. This neutralizes the toxin, which passes into the blood to be excreted in the patients urine. Using machines for synthesizing(结合 ,使合成 )DNA, Fehl and his colleagues made thousands of “scrambled“ versions of the parts of the GST gene that make th
16、e active site of the enzyme. They inserted these scrambled genes into Escherichia coll. By exposing the bacteria to increasing quantities of the anticancer drug, mechlorethamine(氮芥 ), Fehl screened out the ones most tolerant to the drug. “By this method, we made enzymes 30 times as efficient as the
17、natural one,“ says Fehl. In other words, it took 30 times as much drug to kill the bacteria. Fehl has already exposed mice carrying copies of the doctored gene to known carcinogens(致癌物 ) to see how efficient the gene is at mopping up the toxins. The more efficient it is, the less damage the toxins d
18、o and fewer tumors should appear. “We anticipate a significant reduction (in the number of cancers) in the group carrying the gene, “says Fehl, who is still analyzing the results. Fehls team has applied for a patent covering the technique, and hopes to develop treatments with Systemix, a company bas
19、ed in Palo Alto, California. Brian Ketterer, who heads the Cancer Research Campaigns molecular toxicology group in London, says Fehls work could be important. But he warns that the proposed strategy would not protect cells lining the gut from chemotherapy drugs. 16 The passage mainly discusses about
20、 the toxic reaction of anticancer drugs. ( A) Right ( B) Wrong ( C) Not mentioned 17 Dietary intervention may work even after precancerous warning signs have appeared. ( A) Right ( B) Wrong ( C) Not mentioned 18 Being resistant to the anticancer drugs, bone marrow cells can greatly reduce the side e
21、ffects. ( A) Right ( B) Wrong ( C) Not mentioned 19 Wheat bran may lower the risk of colon cancer. ( A) Right ( B) Wrong ( C) Not mentioned 20 The enzyme engineered by Fehls team is superior to the natural enzyme in withstanding Heavy doses of the drugs. ( A) Right ( B) Wrong ( C) Not mentioned 21 F
22、ehl picked up the most tolerant scrambled gene by using machines. ( A) Right ( B) Wrong ( C) Not mentioned 22 The strategy proposed by Fehl can protect cells in various parts of the body from chemotherapy drugs. ( A) Right ( B) Wrong ( C) Not mentioned 三、 概括大意与完成句子 (第 23-30题,每题 1分,共 8分 ) 下面的短文后有 2项测
23、试任务: (1)第 23-26题要求从所给的 6个选项中为第 2-5段每段选择一个最佳标题; (2)第 27-30题要求从所给的 6个选项中为每个句子确定一个最佳选项。 22 1.Medicine is the science and art of healing. It is a science because it is based on knowledge gained through careful study and experimentation. It is an art because it depends on how skillfully doctors and other
24、 medical workers apply this knowledge when dealing with patients. 2. The goals of medicine are to save lives, to relieve suffering, and to maintain the dignity of ill individuals. For this reason, medicine has long been one of the most respected professions. Thousands of men and women who work in th
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- 外语类 试卷 职称 英语 卫生 模拟 19 答案 解析 DOC
