衣原体具有感染能力的发育型称为（） A.真菌 B.网状体 C.始体 D.原体 E.螺

阅读理解。

     Bill Clinton took office on January 20,1993 and became the 42nd U.S president. He is the first U.S

president who was born after World War II. He is also one of the youngest of all U.S presidents. Clinton

was born in a poor family in 1946. Three months before he was born, his father, William Blats, died. When

he was small, his mother remarried Norger Clinton, so the boy's family name was changed. In the summer

of 1963, Clinton was asked to visit the city of Washington. During his visit, he met President Kennedy in the

White House. At that time, he wanted to become a president, and later, he was!

1. When Clinton became the 42nd U.S president he was __________.

A. thirty

B. about forty

C. about forty-seven

D. about fifty-five

2. Clinton's father died __________.

A. after 1946

B. before Clinton was born

C. when Clinton was young

D. before World War II

3. Why was the boy's name changed?

A. Because he became a president.

B. Because his family was very poor.

C. Because his mother remarried Norger Clinton.

D. Because his father was dead.

4. In 1963, Clinton came to the city of Washington __________.

A. for his holidays

B. for a visit

C. to have a meeting with Kennedy

D. to live in White House

5.Which one of the following is right?

A. Everybody can visit the president in the White House.

B. All the U.S presidents work in the White House.

C. Clinton wanted to become a president after he saw President Kennedy

D. Clinton didn't want to change his family name.

扫描电子显微镜在物证检验中有着广泛的用途。它对工具痕迹、弹头、弹壳上痕迹的检验非常有用，对毛发、射击残留物和其他细微物证也极为有用。扫描电子显微镜不仅能以极高的倍数提供物证的形态和表面结构特点的放大图像，而且由于有很好的景深，还能提供清晰的三维图像。这些优点都是一般光学显微镜所不及的。此外，扫描电子显微镜与X射线分析仪联网还能对验材进行定性分析。 这段话中主要支持了这样一个论点，即( )。

A．扫描电子显微镜在物证检验中有广泛的用途

B．扫描电子显微镜的优点其他光学显微镜不具备

C．扫描电子显微镜有适于物证检验的优点

D．扫描电子显微镜是物证检验中运用最广泛的一种仪器

城市是第三产业的载体或“容器”，而第三产业则是“容器”中的“反应物”。没有城市化的相应发展，则“化学反应”即第三产业就无法高效地进行。因此( )。

A．市化进程缓慢，第三产业就发展不起来

B．第三产业的发展决定着城市化进程

C．未来城市将只有第三产业即服务业，而第二产业即工业将不复存在

D．第三产业能大量解决就业问题

装车积载时，在“后送先装”的基本前提下，货品配装还需要注意一些原则，如为了减少或避免差错，在装车时尽量把外观相近、容易混淆的货品分开。

WTO是（）的英文缩写。

A、国际货币基金

B、国际贸易组织

C、世界银行

D、世界贸易组织