【正文】 the AnsaW Sheet.21. A) Doctor Kapbn.B) A university technician. C) A lab instmtor.D) A specialist in science. 22 A) At the beginning.B) In the mid(Oe. C) Near the end D) During the find exam.23. A) To expisin the purpose of having lab experiences. B) To stress the brvartance of safety procedures. C) To tell them where to buy safety equipment.D) To help them to understand their lab results.24. A) An innovative scientist cannot take normal precautions while performing experiments.B) An irwrntor must be Billing to make some painful personal sacrifices to achieve his or her goals.C) Precautionary measures must be followed in all laboratory work to crnsure one39。s safety and health.D) Chemists with personal problems should never use toxic subslanccs. 25. A) Leave the room. .B) Hand in their lab notebooks.C) Go to Professor Kaplan39。ve had my car examined three times now but no mechanic has been able to the problem.A) deduce B) notifyC) highlight D) pinpoint37. Architectural pressure groups fought unsuccessfully to save a terrace of eighteenth century houses from _A) abolition B) demolition C) disruption D) dismantling decided to rent a flat, we____ contacting all the acmodation dt,agencies in the city.A) set out B) set toC) set about D) set off39. The police decided to the department store after they lmd received a bomb warning.A) evict B) expelC) abandon D) evacuate40. If the workforce respected you, you wouldn39。ll give up my day off39。t thank me for helping in the garden. It was pleasure to be working out of doors.A) mere B) sheer C) plain D) simple65. The peace of the public library was by the sound of a transistor radio.A) shuttered B) shatteredC) smashed D) fractured 66. It is doubtless that those who wish to succeed should be A) aggressive B) possessiveC) cooperative D) conventional67. The damp and cold weather had painfully the patient39。 and 39。 is given to this fine powder as well as the natural crystalline material already mentioned. It is also gimp to badly flawed or broken diamond crystals, useless as jewels, that are broken into powder for grinding purposes, the socalled `industrial39。 as it is called. The usual colours of diamonds are white, yellow, brown, green or blueSurrounding rocks and take on their color. thus black ,red and even bright pink diamonds have occasionally been found.The trade in diamonds Is not only in the valuable gem stones but also in the industrial diamonds mentioned above. Zaire produces 70% of such stones. They are fixed into the rock drills used in mining and civil engineering, also for edging band saws for cutting stone. Diamondfaced tools are used for cutting and drilling glass and fine porcelain and for dentists39。 in diamond, _ A) is more important than their colourB) ranges from bluewhite upwards C) ranges from bluewhite downwards D) has never been reliably established 75. Industrial diamonds are used A) for a wide range of purposes B) mainly for dentists39。re not taping about ads that merely boast of a product39。 the craft must be learned.There are two generally recognised apprenticeships. First, and universally preferred, is a long childhood spent in the pany of fractious siblings. After several years of rainy afternoons, brothers and sisters develop a sure feel for the tactics of attrition and the niceties of strategy so necessary in firstrate quarrelling.The only child, or the child of peaceful or repressed households, is likely to grow up failing to understand that quarrels, unlike arguments, arc not about an)1hing, least of all the pursuit of truth. The apparent subject of a quarrel is a mere pretext。s very selfhood is on the fine. To lose an argument is a brief disappointment, much like losing a game of tennis。t do it. I don39。re putting your head in a noose。t do it. I mean just going in there.39。It seemed a fanny way to put it. Pushing a couple of ties in your pocket at a shop was hardly the last word in extroversion, and even a bit on the discreet side when pared to all that firing of shotguns and vaulting over counters which made up the typical bank raid.But my ideas of shoplifting were still bound up with teenage memories of nicking packets of chewing gum from the local newsagents. A lot of guilt and not much loot_ After a few conversations with professional holsters, I realised that `blatant39。If the walk to the door is a little long, then there mm be someone else to take over for the last stretch. No one is in possession for more than a few seconds, and there39。s one other little angle39。s where you39。t consider shoplifting because A) it was beneath his dignityB) the penalties were too high C) it wasn39。s a serious shopperB) remove die goods from the shelves C) establish the easiest goods to stealD) smooth the. path for his acplice .89. Professional shoplifters avoid being caught in the act by A) passing goods from one to anotherB) hiding behind ordinary shoppers C) racing for the nearest exitD) concealing goods in ordinary bath90. Potential shoplifters may be identified when the:.A) seem unable to decide what to buyB) openly signal to apparent strangers C) are unusually chatty to assistants D) set off towards emergency exitsPassage FivePerhaps there are far more wives than I imagine who take it for granted that housework ii neither satisfying nor even important once the basic demands of hygiene and feeding have been met. But home and family is the one realm in which it is really difficult to shale free: of one39。t a fit activity for an intelligent being. I was an only child, and once I was at school there was no reason why she should have continued against her will to remain housebound, unless, as I suspect, my father would not hear of her having a job of her ownI can now begin to understand why a woman in a small suburban house, with no infants to look after, who does not enjoy reading because she has not had mu