第二节 情景对话(共5小题,每小题1分,满分5分)

根据对话情景和内容,从对话后所给的选项中选出能填入每一空白处的最佳选项,并在答题卡上将该选项涂黑.选项中有两个为多余选项

Make and John are discussing the activity for Sunday.

Mark: Hi,John!

John: Hi,Mark!Sunday again!

Mark:   6    The weather is fine.Something special?

John: Yes!I feel like going to a library.

Mark: I agree.  7  .

John: What about the Haitian Universuty?So far as I know,it’s free.

Mark:   8  .However ,now you have to pay to borrow the world-famous books.

John: What about you? What do you feel like doing?

Mark: I’d rather go to the Science College Library.  9   It’s all about science,educatation,culture,space and satellites.

John: I’d like to see that,too.I’m planning to attend a composition contest on how to learn English better and use it more freely.Maybe I could find out some useful information.

Mark: Fine!  10  I’ll tell my mother what we’ve decided to do.And anything else?

John: No!Let’s go!

A.   No,not any more.It used to be free.

B.   What shall we do today?

C.   There’s a special exhibition today.

D.   Where did you go today?

E.   Why don’t you get your things ready?

F.   They are very interesting.

G.   Which library would you like to visit?

第三节 语法和词汇知识(共15小题,每小题1分,满分15分)

从每小题的A、B、C、D四个选项中,选出可以填入空白处的最佳选项.

32.(8分)2003年研究细胞水通道的科学家彼得.阿雷格获得了诺贝尔化学奖。他在研究细胞膜上的各种蛋白质时,通过测定氨基酸序列及其相应的DNA序列,发现了一种细胞水通道蛋白,并推测细胞渗透吸水、失水过程中,水分子进出细胞需通过此通道。为验证这一假设,他得到了如下材料:

a.分离纯化的水通道蛋白

b.含有水通道蛋白的细胞

c.去除水通道蛋白的细胞

d.磷脂双分子层构成的内含水溶液的球状体(其膜结构能与加入的蛋白质结合)

e.能够抑制蛋白质活性的含汞离子的试剂

f.蒸馏水

某生物小组同学设计了以下实验研究水通道:取一只培养皿,加入一定的蒸馏水,放入含有水通道蛋白的细胞,一段时间后用显微镜观察。加入水通道蛋白的细胞胀破。

结论:水分子通过水通道蛋白进入细胞内部。

(1)此实验的目的是__________________________________________________

(2)找出上述实验过程的不合理之处,并加以改正

(3)选取科学家找到的实验材料设计另外一个实验,验证科学家提出的假设.

方法: ①                              ;

②                     ; ③               

预计将出现的现象:__________________________________________________

结论:______________________________________________________________

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