英语四级考试备考复习资料

1、英语四级考试备考复习资料英语四级考试备考复习资料汇总1：阅读练习题 There is evidence that the usual variety of high blood pressure is, in part, a familial disease. Since families have similar genes as well as similar environments, familial diseases could be due to shared genetic influences, to shared environmental factors, or to bo

2、th. For some years, the role of one environment factor commonly shared by families, namely dietary salt (i.e., sodium chloride), has been studied at Brookhaven National Laboratory. These studies suggest that long excess salt intake can lead to high blood pressure in man and animals. Some individuals

3、, however, and some rats consume large amounts of salt without developing high blood pressure. No matter how strictly all environmental factors were controlled in these experiments, some salt-fed animals never developed hypertension whereas a few rapidly developed very severe hypertension followed b

4、y early death. These marked variations were interpreted to result from differences in genetic constitution. By mating long successive generations of those animals that failed to develop hypertension from salt intake, a resistant strain (the R strain) has been evolved in which consumption of large qu

5、antities of salt fails to influence the blood pressure significantly. In contrast, by mating only animals that quickly develop hypertension from salt, sensitive strain (the S strain) has also been developed. The availability of these two strains permits investigations possible. They provide a plausi

6、ble laboratory model on which to investigate some clinical aspects of the human hypertension. More important, there might be the possibility of developing methods by which genetic susceptibility (敏感性) of human beings to high blood pressure can be defined without waiting for its appearance. Radioacti

7、ve sodium 22 was an important tool in working out the characteristics of the sodium chloride metabolism. 21. The study of the effects of salt on high blood pressure was carried out_. A. as members of the same family tend to use similar amounts of salt B. to explore the long-term use of a sodium base

8、d substance C. because it was proven that salt caused high blood pressure D. because of the availability of chemically pure salt and its derivatives 22. The main difference between S and R rats is their_. A. need for sodium 22 B. rate of mating C. reaction to salt D. type of blood 23. We can infer f

9、rom the article that sodium 22 can be used to_. A. control high blood pressure B. cure high blood pressure caused by salt C. tell the S rats from the R rats D. determine what a sodium chloride metabolism is like 24. The most beneficial results of the research might be_. A. development of diets free

10、of salt B. an early cure for high blood pressure C. control of genetic agents that cause high blood pressure D. the early identification of potential high blood pressure victims 25. Which of the statements best relates the main idea of this article? A. When salt is added rats and human beings react

11、similarly. B. The near future will see a cure for high blood pressure. C. The medical field is desperately in need of research. D. A tendency toward high blood pressure may be a hereditary factor. 21. A 22. C 23. D 24. D 25. D 英语四级考试备考复习资料汇总2：高频词组 名词词组和固定搭配 1.介词+名词 by accident 偶然 on account of 因为，由于

12、，为了的缘故 in addition to 另外，加之 in addition 除之外(还) in the air 流传中 on (the/an) average 按平均值，通常 on the basis of 根据，在的基础上 at best 充其量，至多 for the better 好转，向好的方向发展 on board 在船(车或飞机)上 out of breath 喘不过气来 on business 因公，因事 in any case 无论如何，不管怎样 in case of 假如，如果发生;防备 in case 假使，以防(万一) in no case 决不，无论如何不 by ch

13、ance 偶然，碰巧 in charge (of) 负责，管理 (a)round the lock 日夜不停地 in common 共用的，共有的 in conclusion 最后，总之 on condition (that) 如果 in consequence of 由于的缘故，因为 on the contrary 正相反 in contrast with/to 与对比起来，与形成对比 out of control 失去控制 under control 处于控制之下 at all cots 不惜任何代价，无论如何 at the cost of 以为代价 in the course of 在过

14、程中，在期间 of course 当然，自然 in danger 在危险中，垂危 out of danger 脱离危险 out of date 过时的，不用的 up to date 现代化的，切合目前情况的 in demand 非常需要的，受欢迎的 in debt 欠债，负债 in detail 详细他 in difficulties 处境困难 in the distance 在远处 off duty 下了班(的)，不在值班(的) on duty 在上班(的)，在值班(的) on earth 究竟，到底 at all events 无论如何，不管怎样 in any event 无论如何，不管怎

15、样 in the event of 万一，倘若 for example 例如 in the face of 在面前;不顾 in fact 其实，实际上 in favo(u)r of 赞同，支持 on fire 着火，起火 on foot 步行 in force 生效，有效;在实施中;大量的 in front of 在面前，在前面 in future 今后，从今以后 in the future 在将来 in general 一般说来，大体上 on (ones) guard 警惕，提防;站岗，值班 in half 成两半 at hand 近在手边，在附近 by hand 用手，用体力 hand d

16、own 把传下去 hand in hand 手拉手;密切关联地，同时并进地 in hand (工作等)在进行中;在控制中 on hand 在手边，在近处 on (the) one hand 一方面 on the other hand 另一方面 at heart 内心里，本质上 by heart 凭记性 at home 在家，在国内;舒适，无拘束;熟悉，精通 in hono(u)r of 为纪念，为了向表示敬意 on/upon ones hono(u)r 以名誉担保 in a hurry 匆忙，急于 for instance 例如;比如 at intervals 不时，每隔一段时间(或距离) a

17、t (long) last 终于 at least 至少 at length 终于，最终;详细地 in (the) light of 鉴于，由于 2.动词+名词 have/gain access to 可以获得 takeinto account 考虑到，顾及，体谅 take advantage of 占的便宜，利用 pave the way (for) 铺平道路，为作准备 pay attention to 注意 do/try ones best 尽力，努力 get/have the best of 战胜 make the best of 充分利用 get/have the better of

18、战胜，在中占上风 catch ones breath 屏息;喘气，气喘;歇口气 take care 注意，当心 take care of 爱护，照料 take a chance 冒险，投机 take charge 开始管理，接管 keepcompany 陪伴 take (a) delight in 以为乐 make a difference 有影响，起(重要)作用 carry/bring/put into effect 使生效，实行，实现 come/go into effect 生效，实施 take effect 生效，起作用 catch sbs eye 被某人看到，引起某人注意 keep a

19、n eye on 留神，照看，密切注意 make a face 做鬼脸 find fault with 抱怨，挑剔，找岔子 catch (on) fire 着火，开始燃烧 make fiends (with) 与()交朋友 be friends with 与友好 make fun of 取笑，拿开玩笑 keep sbs head 保持镇静 in the world 究竟，到底 lose sbs head 慌乱，仓皇失措 lose heart 丧失勇气，失去信心 get/catch/take hold of 抓住，得到 page keep house 管理家务 throw/cast light

20、on/upon 使人了解，阐明 bear/keep in mind 记住 have in mind 考虑到，想到 make up ones mind 下定决心，打定主意 bring/put into operation 实施，使生效，使运行 come/go into operation 施行，实行，生效 keep pace (with) 与()齐步前进，与()并驾齐驱 play a part (in) 起作用，参与，扮演角色 take place 发生，进行，举行 take the place of 代替，取代 put into practice 实施，实行 make progress 进步，

21、进展 give rise to 引起，导致为的原因 make sense 讲得通，有意义，言之有理 catch sight of 发现，突然看见 (go) on the stage 当演员 take ones time 不着急，不慌忙 keep track of 与保持联系 lose track of 失去与的联系，不能跟上的进展 make use of 利用 put to use 使用 give way 让路;屈服，让步;倒塌，坍陷 make ones way 前往，行进，去 make way 让路，腾出地方或位置 3.名词词组的其他形式 appeal to 呼吁，恳求 attempt at 企图，努力 attitude to/towards 态度，看法 a great/good