9.The attackers were arrested and didn’t know where they .
A.would take B.are taken
C.were being taken D.will be taken
8.Some movie stars are always wearing sunglasses , afraid of ____.
A.being recognized B.recognizing
C.having been recognized D.recognized
7.Only when Tom fully recovered _____ back to work. A.did he go B.he went C.had he gone D.he had gone
6.-Why are your hands so dirty?
-I in the garden.
A.was working B.have worked
C.worked D.have been working
5.The wrong you ‘ve done to him is so terrible , for___ you should make an apology to him , I think.
A.which B.this C.what D.that
4.-- What was the party like?
-- Wonderful.It is years ____ I had a good time.
A.after B.when C.before D.since
3.You look so tired.You ______ have stayed up late again.
A.should B.can C.may D.must
2. Today, rapid transportation and communication, the whole world seems to be smaller.
A.regardless of B.in spite of C.instead of D.because of
第一节 单项填空(共25小题;每小题1分,共25分)
从每题所给的A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
1.-What do you think of their new house?
-It’s very modern,but they have some antique in it.
A.furniture B.furnitures
C.piece of furnitures D.piece of furniture
30.(12分)“瘦素”是最近由英国研究人员发现的人体中一种重要激素,它能控制人的食欲。注射“瘦素”后,人的食欲会下降,从而对人体是否发胖起到至关重要的作用。请回答下列问题:
(1)肥胖是由体内脂肪过多引起的,检验脂肪的试剂是 ,颜色反应是 。
(2)在“5·12汶川大地震”后期的救援中,从废墟下救出的生还者女性较男性多。其原因在于女性皮下脂肪厚,在没有食物和饮水的条件下,女性的生存期限会比男性长。请从脂肪的元素组成及主要作用角度分析出现上述现象的原因
。
(3)某校生物兴趣小组想利用以下材料,设计实验探究“瘦素”能否控制动物的食欲以及能否起到减肥作用,请帮他们完成下列实验设计。
材料用具:大鼠若干只、普通饲料、一定剂量的“瘦素”溶液、生理盐水,其他所需条件均满足。
实验步骤:
第一步:选取 基本相同的大鼠若干只,随机平均分为两组,并编号为甲、乙;
第二步:甲组每天注射 ,乙组每天注射 的生理盐水;
第三步: ;
第四步:一段时间后,观察大鼠的食欲状况,称量并统计 .
预期结果及相应的结论:
若 ,则说明 ;
若 ,则说明 ;
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