9. - you were so late this morning?
-I forgot to set the alarm before going to bed last night.
A. Why B. How come C. How about D. How
8. At the beginning of a speech, it is very important to grab the audience’s attention and make them interested in ________you have to say.
A. which B. what C. that D. who
7.They are letting us use their computer, and __________ we are giving them the results of our research.
A. in charge B. in place C. in return D. in a row
6.There was a murder in one of the poorest suburbs in the city the other day. Now the police are turning the whole house upside down __________ clues.
A. in want of B. in search of C. in favor of D. in need of
5.After years of hard work, he has at last achieved his lifelong __________ of launching a newspaper, which is very popular with teenagers.
A. motivation B. appetite C. ambition D. privilege
4.The fire,believed to due to illegal construction on the building’s roof, was brought
under control after an hour.
A.have occurred B.occur
C.have been occurring D.be occurring
3.He lay in bed,listening to the rain the window.
A.hitting B.defeating C.beating D.striking
2.When he applied for a in the office of the local newspaper he was told to see the manager
A.location B.situation C.career D.position
第一节:单项填空(共20小题 ;每小题0.5分,满分10分)
从A、B、C和D四个选项中,选出可以填入空白处的最佳选项,并在答题纸上将该选项标号涂黑。
1.-It seems that Westerners seldom give their friends financial help.
-Maybe.For them friendship is mostly matter of providing emotional support and spending time together.
A./;the B.the;a C./;a D.a; the
(三)、分析并回答:
⑴指出该实验步骤中存在的三处错误并修正
①
②
③ ⑵若要得出叶中脯氨酸含量的变化与危害的关系,实验中还应增加叶的危害程度这一指标,叶的危害程度可以用__________________作为指标。
⑶预期最可能的实验结果
31.(22分)已知家兔的毛色受两对基因(A-a,B-b)的支配,这两对基因位于非同源染色体上,其表现型和基因型的对应关系如下表,请回答下列问题:
基因型 |
A,B同时存在 |
A存在,B不存在 |
只要A不存在 |
表现型 |
黑色 |
灰色 |
白色 |
(1)黑兔的基因型有 种,白兔的基因型为
(2)多对基因型相同的黑兔交配,子代毛色只有两种,且分离比为3:1,则双亲的基因型为 ,
(3)一只黑兔与一只灰兔交配,子代毛色有黑色、灰色和白色,则双亲的基因型为 ,黑色、灰色和白色子代的理论分离比为 。
(4)现有一只灰色雄兔,设计方案测定其基因型。简要写出方案和预期结果。(注:提供的雌兔都为基因型相同的纯合子)
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