100张纸叠起来大约厚1cm，如果把1亿张这样的纸叠起来大约（）

（）又名次（），是鲜味剂的前体物质，其生产菌株多为（）缺陷型菌株，发酵过程中需添加（），其中组氨酸是必需的。

一条河宽100米，船在静水中的速度为4m/s，水流速度是5m/s，则（   ）

A．该船可能垂直河岸横渡到对岸

B．当船头垂直河岸横渡时，渡河所用的时间最短

C．当船横渡时与岸的夹角可能为60°

D．当船横渡到对岸时，船对岸的最小位移是125米

英译汉：“stipulation of contract；supervision and administration”，正确翻译为( )。

A．合同规定；监督管理

B．合同规定；行政管理

C．合同细节；监督管理

D．合同细节；政府行政

阅读理解。

     All of my childhood and early adult life, my mom weighed over 220 pounds (one pound = 0.454

kilograms). I could feel the pain that my mom experienced with her fatness.

I was never uncomfortable about my mother, but I think she was uncomfortable about herself, and that

feeling was painful for all of us. And she began to lose weight.

     After more than twenty years of battling obesity(肥胖), my mother completed a forceful

eighteen-month diet that left her ninety pounds lighter than before. A new woman was born! At age

twenty-eight, I got a new mom! For the first time, I met the woman my mother truly was, the beautiful

little lady under the fatness. It wasn't so much her new body that was the surprise, but rather her new

spirit.

    To celebrate her new size and to devote herself to dancing again, my mother joined a "Mrs. Forty-Plus" competition, where she would have to model, give a speech and provide a dance performance. She told

our family that she did not care if she won - she simply had always wanted to perform on stage.

    She told each one of us, "I'm not doing it to win; I'm doing it to dance!"

    The competition was exciting! I prayed that my mom would win, but while watching her on stage I was

simply overjoyed just by her effort. To me, she had already won. She posed to perfection, her speech

brought tears to everyone's eyes, and her performance was wonderful.

    That night, at age fifty-three, my mother was crowned (为......加冕) "Mrs. Forty-Plus". She was the

first person in our family to ever win such a title.

1. The first two paragraphs mainly show that the author's mom was ______.

A. experienced     

B. painful          

C. comfortable        

D. fat

2. After the author's mom completed a forceful eighteen-month diet, she was about ______.

A. 85 kilograms    

B. 41 kilograms      

C. 130 pounds        

D. 90 pounds

3. In order to join in the "Mrs. Forty-Plus" Competition, the author's mom has to do the

    following EXCEPT______.

A. providing a dance performance            

B. telling a funny story about herself

C. giving a speech to a large number of people  

D. wearing special clothes to show to people

4. The underlined part in Paragraph 6 means that ______. 

A. the author's mom succeeded in modeling and speaking

B. the author's mom's performance was very wonderful

C. the author's mom was not successful in modeling

D. the author's mom succeeded in making a speech