0  311590  311598  311604  311608  311614  311616  311620  311626  311628  311634  311640  311644  311646  311650  311656  311658  311664  311668  311670  311674  311676  311680  311682  311684  311685  311686  311688  311689  311690  311692  311694  311698  311700  311704  311706  311710  311716  311718  311724  311728  311730  311734  311740  311746  311748  311754  311758  311760  311766  311770  311776  311784  447090 

26.The minister stressed that under no circumstances ____ the disabled to be looked down upon.

    A.is             B.are           C.has           D.have

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25.It seems as if they are going to ____ us a lot of money for the party hall.

    A.cost          B.ask           C.demand       D.charge

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24.It was with great excitement one morning in July ________ the young man read a classified advertisement.

    A.when          B.that           C.who          D.which

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23.It is obvious that this anti-smoking ____ is mainly aimed at young teenagers.

    A.campaign       B.war           C.battle         D.fighting

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22.He admitted that when ____ comes to repairing a computer, he had little knowledge of it .

    A.he            B.that           B.this           D.it

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第一节:单项填空(共15小题,每小题1分,满分15分)

从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该选项的标号涂黑。

21.-Do you think the weather is good enough for the picnic?

    -Yes.You couldn't hope for ____ day at this time of the year.

    A.a nice         B.the nice        C.a nicer         D.the nicest

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4.测定各试管麦牙糖含量,计算总淀粉酶活性酶活性、α-淀粉酶活性和β-淀粉酶活性(如α-淀粉酶活性=实验组1测定值-对照组测定值。其它具体方法略)

回答问题:

a作为对照组,另一种做法是加入淀粉液但不加酶液,两者相比较,现行做法优点是______________________________________

b实验所测得β-淀粉酶活性=___________________________________

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3.取试管三个,编号,按下表加入各液:(在答案卷填写1、2号实验组所缺的内容)

试剂
组别
1%可溶性淀粉液
酶液
对照组
0ml
1 ml乙试管酶液
1号实验组(测α-淀粉酶活性)
2 ml

2号实验组 (测总淀粉酶活性)
2 ml

将以上各管试剂混匀后,置40℃水浴准确保温5分钟,取出后立即向1、2、3号试管中加入4ml0.4mol/LNaOH,以终止反应。

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