0  442962  442970  442976  442980  442986  442988  442992  442998  443000  443006  443012  443016  443018  443022  443028  443030  443036  443040  443042  443046  443048  443052  443054  443056  443057  443058  443060  443061  443062  443064  443066  443070  443072  443076  443078  443082  443088  443090  443096  443100  443102  443106  443112  443118  443120  443126  443130  443132  443138  443142  443148  443156  447090 

27.He glanced over at her, ____that though she was tiny, she seemed very well put together.

    A.noting       B.noted       C.to note      D.having noted

試題詳情

26.As an athlete, nothing comes _____Jim and his morning exercise.

    A.out         B.between     C.with         D.a(chǎn)mong

試題詳情

25.As soon as he comes back, I’ll tell him when ________and see him.

    A.you will come                B.will you come            

    C.you come                                    D.do you come

試題詳情

24.-----My brother failed in business.

    -----_____.

    A.I am certain he’ll make it.                    B.That’s really tough.

    C.Everything is going well with me.                D.Actually, there is no choice anyway.

試題詳情

23.The flight attendant welcomed us ___ the plane.

    A.a(chǎn)broad                    B..a(chǎn)board    C.board      D.broad

試題詳情

22.______, a man who expresses himself effectively is sure to succeed more rapidly than a man whose command of English is poor.

    A.Other things being equal                    B.Other things be equal

    C.To be equal to other things                   D.Other things to be equal

試題詳情

第一節(jié):?jiǎn)雾?xiàng)填空(共15小題;每小題1分,滿分15分)從A、B、C、D四個(gè)選項(xiàng)中,選出可以填入空白處的最佳選項(xiàng)。

21.-----Shall we go to the art exhibition right away?

    -----_____.

    A.It’s your opinion.              B.I don’t mind.             

    C.It’s all up to you.              D.That’s your decision.

試題詳情

53.實(shí)驗(yàn)是生物學(xué)學(xué)習(xí)的一項(xiàng)重要內(nèi)容,結(jié)合所學(xué)實(shí)驗(yàn)分析回答下列問題。

  (1)在“DNA與RNA在細(xì)胞中的分布”實(shí)驗(yàn)中,所有的染色劑是     ,選用8%鹽

酸的作用是     。

  (2)分離獲取細(xì)胞質(zhì)中各種細(xì)胞器的方法是      ;制備細(xì)胞膜時(shí),所采用的方法

叫做      。

  (3)Grimton曾觀察到:饑餓的原生動(dòng)物的粗面內(nèi)質(zhì)網(wǎng)減少,或幾乎完全消失,高爾基

體的形成停止,由于這些細(xì)胞于實(shí)驗(yàn)期間還繼續(xù)形成分泌小泡,所以每一個(gè)高爾基

體的囊的數(shù)目減少了,但當(dāng)給動(dòng)物重新喂食后,形成了新的粗面內(nèi)質(zhì)網(wǎng),同時(shí)產(chǎn)生

新的高爾基體,囊的能力也恢復(fù)了。高爾基體的構(gòu)建和數(shù)目變化為什么與內(nèi)質(zhì)網(wǎng)一

致呢?

①你的假說:              。

②實(shí)驗(yàn)設(shè)計(jì)與實(shí)施: 略。

  (4)在歐美,洋蔥被譽(yù)為“蔬菜皇后”。其肥大的鱗莖中含糖類、維生素及各種礦質(zhì)元素

等,是不可多得的保健食品。那么洋蔥肥大的鱗莖中所含的糖是淀粉還是還原糖?

某生物學(xué)興趣小組的同學(xué)以此作為研究課題。請(qǐng)你完成下面的實(shí)驗(yàn)研究報(bào)告!

①實(shí)驗(yàn)?zāi)康模禾骄垦笫[肥大的鱗莖中所含的糖是淀粉還是還原糖。 

②實(shí)驗(yàn)原理:

a.                               

b.                              

試題詳情


同步練習(xí)冊(cè)答案