题目

给出下列表达式：①a（b+c）=ab+ac；②﹣2＜0；③x≠5；④2a＞b+1；⑤x2﹣2xy+y2；⑥2x﹣3＞6，其中不等式的个数是 答案：【1】4　　The relation between man and animals is close but not equal. Although 1 is true that there are a large 2 of cases of men being the victims (受害者) of animals (of a man-eating tiger or a rabid (狂怒的) dog, for example ), 3 man is the master. 4 the beginning of the human race, animals have been hunted for food. 5 the number of vegetarians (吃素者) in the world has increased , 6 of beef , lamb and pork is 7 consumed (耗费) every day. At work and at play we 8 on animals. Motor transport may have 9 the place of the animals 10 the developed world, but in India life for the farmer would be 11 without the 12 of the cow, and 13 a few third -world countries depend on the horse for transport. We 14 pets at home, and we 15 seeing the elephants play football 16 a monkey play the violin at the circus (马戏场) . The blind have guide dogs, the rich have guard 17 , and 18 the police have dogs to help 19 . Remembering all this, do we need to 20 animals in scientific experiments as well? 1． [　　] A．thisB．it C．whatD．which 2． [　　] A．dealB．number C．partD．side 3． [　　] A．in shortB．in fact C．in that caseD．in most cases (usually) 4． [　　] A．SinceB．After C．Because ofD．Thanks to 5． [　　] A．HoweverB．Whichever C．ThoughD．Whatever 6． [　　] A．a small dealB．a small number C．a great dealD．a great number 7． [　　] A．probablyB．hopefully C．thenD．still 8． [　　] A．dependB．take C．callD．hold 9． [　　] A．take placeB．taken C．removedD．got 10． [　　] A．onB．in C．atD．of 11． [　　] A．unnecessaryB．necessary C．impossibleD．possible 12． [　　] A．needB．help C．demandD．improvement 13． [　　] A．completelyB．perfectly C．alsoD．quite 14． [　　] A．keepB．protect C．bringD．contain 15. [　　] A．preventB．mind C．dislikeD．enjoy 16． [　　] A．soB．or C．butD．thus 17． [　　] A．catsB．birds C．bearsD．dogs 18． [　　] A．yetB．but C．evenD．now 19． [　　] A．himB．that C．themD．it 20． [　　] A．come close toB．take care of C．do away withD．make use of