职称英语直播课-完形填空讲义—3.10日

职称英语直播课-完形填空讲义—3.10日 (一)Seeing Red Means Danger Ahead C级 The color red often means danger — and by paying attention, accidents can be prevented. In the future, the color red also may help prevent (51) danger at construction sites. Thanks to new work by engineers, bridge supports — or ________ (52) kinds of materials — could one day contain a color-changing material. It will turn red ________ (53) a structure collapses or falls apart. The secret ________ (54) the color-changing material is a particular type of molecule(分子). A molecule is a group of atoms(原子)held together by chemical bonds. Molecules come________ (55) all shapes and sizes, and make up ________ (56) you can see, touch or feel. How a molecule behaves depends on ________ (57) kinds of atoms it contains, and how they’re held together. When a polymer(聚合物)containing a color-changing molecule called a mechanophore(机 械响应性聚合物)is about to break, it produces a ________ (58). When a polymer with mechanophore molecules becomes “injured” or ________ (59), one of the mechanophore bonds ________ (60) and the material turns red. “It’s a really simple detection method,” says Nancy Sottos, one of the scientists who worked on the project. Sottos and her team tested the color-changing polymers in their lab. The test ________ (61) proved encouraging. There is a way to get rid of the red color: light. When a bright light is shone on the mechanophore, the broken bond is fixed —and the red color ________ (62). This “self-healing” may be a problem for engineers. They need to use the color-changer in big construction projects that will be ________ (63), in sunlight. And sunlight will make the mechanophore’s warning system ________ (64). Sottos and her fellow scientists still have________ (65) work to do before the color-changing molecules can be used outside the lab. 51(A(throw B(prevent C(create D(keep 52(A(other B(another C(the other D(others 53(A(until B(although C(after D(before 54(A(on B(behind C(under D(down 55(A(for B(in C(from D(at 56(A(nothing B(anyone C(someone D(everything 57(A(why B(how C(what D(where 58(A(color B(trouble C(sound D(time 59(A(strong B(soft C(weak D(hard 60(A(closes B(breaks C(increases D(burns 61(A(results B(rules C(tools D(methods 62(A(repairs B(controls C(finishes D(disappears 63(A(inside B(beside C(outside D(above 64(A(dangerous B(useless C(helpful D(important 65(A(a pair of B(a type of C(a lot of D(a part of 答案 八年级地理上册填图题岩土工程勘察试题省略号的作用及举例应急救援安全知识车间5s试题及答案 :BADBB, DCACB, ADCBC (二)Exercise B级 Whether or not exercise adds______(1)the length of life，it is common experience that a certain ______(2)of regular exercise improves the health and contributes a feeling of well-being(Furthermore，exercise______(3)involves play and recreation，and relieves nervous tension and mental fatigue in so doing，is not only pleasant but beneficial( How much and what kind of exercise one should ______(4) merits careful consideration(The growing child and the normal young man and young woman thrill with the exhilaration of strenuous sports(They fatigue to the______(5)of exhaustion but recover promptly with a period of rest(But not so with______(6)of middle age and beyond(For them moderation is ______ (7)vital importance(Just how much exercise a person of a given age can safely take is a question______(8)to answer( Individual variability is______(9)great to permit of generalization(A game of tennis may be perfectly safe for one person of forty but folly for another(The safe limit for exercise ______(10)on the condition of the heart，the condition of the muscles，the type of exercise, and the regularity with which it is take. Two general suggestions，however，will ______(11) as sound advice for anyone(The first is that the condition of the heart and general health should be______(12)periodically by careful， thorough physical examinations(The ______(13) is that exercise should be kept below the point of physical exhaustion( What type of exercise one should ______(14) depends upon one's physical condition(Young people can safely enjoy vigorous competitive sports，but most older persons do better to limit themselves to less strenuous activities(Walking，swimming，skating are among the sports that one can enjoy and safely participate______(15)throughout life(Regularity is important if one is to get the most enjoyment and benefit out of exercise( 1. A. for B. to C. at D. of 2. A. heaviness B. highness C. amount D. number 3. A. which B. where C. when D. why 4. A. carry B. make C. bring D. take 5. A. point B. place C. 1eft D. reverse 6. A. these B. this C. those D. that 7. A. against B. below C. on D. of 8. A. easy B. hard C. impossible D. unnecessary 9. A. very B. too C. constantly D. considerably 10. A. depends B. bases C. acts D. carries 11. A. refer B. regard C. serve D. treat 12. A. delayed B. defended C. designed D. determined 13. A. other B. another C. one D. same 14. A. endure B. choose C. rebuild D. produce 15. A. with B. from C. in D. on 答案:BCADA, CDBBA, CDABC (三)The Old Gate A级 In the Middle Ages the vast majority of European cities had walls around them. This was partly for defensive (1) ______but another factor was the need to keep out anyone regarded as undesirable, like people with contagious (2) ______.The Old City of London gates were all (3) ______by the end of the 18th century. The last of London's gates was removed a century ago, but by a (4) ______ of luck, it was never destroyed. This gate is, in(5)______fact, not called a gate at all; its name is Temple Bar, and it marked 1(the (6) ______between the Old City of London and WestminsterIn 1878 the Council of London took the Bar down, numbered the stones and put the gate in (7) ______because its design was (8)______it was expensive to (9) ______and it was blocking the traffic. The Temple Bar Trust was (10) ______in the 1970's with the intention of returning the gate home. The aim of the Trust is the (11) ______of the nation's architectural heritage. Transporting the gate will mean physically pulling it (12) ______, stone by stone, removing and rebuilding it near St Paul's Cathedral. Most of the facade of the gate will probably be 2(13) ______, though there is a good (14) ______that the basic structure will be sound. The hardest (15)______of all, however, will be to recreate the statues of the monarchs that once stood on top of the gate. 词汇:contagious /k?n'teid??s/ adj(传染性的，会蔓延的 demolish /di'm?li?/vt(拆除，破坏 stroke/str?uk/ n(打击 preservation /'prez?'vei??n/ n(保存，保留 boundary/'baund?ri/ n(范围，分界线 cathedral /k?'θi: dr?l/ n(保留，保存 1(A grounds B reasons C causes D purposes 2(A injuries B symptoms C colds D diseases 3(A devoted B demolished C declared D decreased 4(A stroke B wave C hit D blow 5(A real B contemporary C actual D current 6(A borders B part C boundary D line 7(A storage B store C storing D stock 8(A unrealistic B unfashionable C unavailable D unbearable 9(A maintain B afford C repair D fix 10(A set out B setup C set off D set back 11(A preservation B reservation C conservation D recreation 12(A up B over C on D down 13(A replaced B substituted C exchanged D overtaken 14(A capacity B opportunity C possibility D chance 15(A requirement B job C necessity D obligation 参考答案:BDBAC, CABAB, ADADB,