刺激促胰液素释放的最有效物质是A．蛋白质分解产物B．葡萄糖C．HClD．胆酸钠E．淀

某元素的原子核外有三个电子层，M层的电子数是L层电子数的1/2，则该元素的原子是

A．Li

B．Si

C．Al

D．K

阅读理解。

     Mrs. Allen's husband died ten years ago when her son and daughter were still in high school. Mr.

Allen had left some money, and since Mrs. Allen had managed a bookstore before she was married,

she took the money and bought a shop in town. Later she moved the shop out to the shopping center.

    She was a pleasant woman; she worked hard and was well-informed about books, and so the

bookstore prospered(生意兴隆) and she was able to hire a friend to help her.

    Laura Barnes, Mrs. Allen's friend and assistant, was also a widow. She had some free time and

the need for a little extra-money, and so she took the job in the bookstore. She was too clever and

friendly, and the two women were well-known in the neighborhood as "Mrs. A" and "Mrs. B"

1.  How many people in all were there in the two women's families? ______.

A. At least 8      

B. At least 7      

C. At least 6      

D. At least 4

2. The bookstore prospered ______.

A. after Mrs. Allen lost control of it

B. before Mrs. A got to know Mrs. B

C. because the two women had little housework to do

D. because Mrs. A became expert at management and threw herself into it

3.  Why did Mrs. A hire Mrs. B? ______. 

A. Mrs. B asked for very little pay

B. She believed that Mrs. B was the very person to help her to improve management

C. Mrs. B was a friend of hers

D. She was also that kind of woman like her

4. Which of the following is true? ______.

A. Mrs. A set up her bookshop in the shopping center

B. Mr. Allen was dead but Mr. Barnes alive

C. Mrs. A managed to set another bookstore with Mrs. B

D. The two children of Mrs. A were of the same age

急性血吸虫病血象检查显著增多的是（）

A.中性粒细胞

B.白细胞总数

C.嗜酸性粒细胞

D.嗜碱性粒细胞

E.单核细胞

牙列中彩度最高的牙是

A．中切牙
B．侧切牙
C．尖牙
D．前磨牙
E．磨牙

E花结形成试验中，T细胞数量增高的是（）。

A.某些病毒感染

B.恶性肿瘤

C.淋巴增殖性疾病

D.SLE活动期

E.多发性神经炎