对支气管肺段（见图）的描述，正确的是（） A.由肺间质构成 B.是二级支气管所属的肺

下列句中划线词语使用错误的一项是（   ）（2分）

A．面对突如其来的熊熊烈火，为了六条幼小的生命，王茂华老师毅然跳入火海。

B．探索应该有想象力、有计划，不能消极地袖手旁观。

C．从前对巴特农神庙怎么干，现在对圆明园也怎么干，只是更彻底，更漂亮，以至于荡然无存。

D．2011年4月24日，是清华大学建校100周年纪念日，海内外五万多名清华学子重回母校，追忆青春岁月，共享天伦之乐。

6个钉子_呻、Q、R、s、T和u放在7个不同的洞中，每一个钉子所占据的洞与其他钉子的不一样。这些洞按从左到右的顺序从1到7编号，且一条直线均匀分布。钉子的放置仅须遵从以下条件：(1)P和Q之间的距离与R和S之间的距离相同；(2)T和U相邻，但先后位置不一定；(3)最左边的那个洞不能空着。

若U在2号洞，则下面哪一项一定正确

A．P在3号洞。

B．Q在4号洞。

C．R在5号洞。

D．T在1号洞。

阅读理解。

     A lazy Susan is an addition to a table that is designed to assist in moving food from one person to another

while dining. This is achieved through the use of a turntable (转盘), which usually moves the food in a circle

when it is pushed by those at the table. In this way, the food never has to be picked up and passed around the

table. Instead, it remains in place on the lazy Susan.

     A lazy Susan may also be a part of a kitchen cabinet (橱柜). In this sense, the lazy Susan is a type of

shelving unit within the cabinet that is able to turn around its axis (轴心). One may turn the lazy Susan in order

to find certain goods in storage. From the outside, a lazy Susan appears to be two cabinets that are located at

a right angle (直角) to each another. When one of these cabinets is pushed, however, both doors move and the

lazy Susan is revealed inside.

     It is believed that Thomas Jefferson invented the lazy Susan in the 18th century, though it was called

"dumbwaiter" at that time. It is said that Jefferson invented the lazy Susan because his daughter complained

she was always served last at table and, as a result, never found herself full when leaving the table. Others

believe that Thomas Edison was the inventor, as he is believed to have invented the turntable for his

phonograph (留声机). The turntable may have developed into the lazy Susan later.

     Regardless of who invented it, it wasn't until 1917 that the term"lazy Susan" was used in an advertisement

for the invention. In Britain, however, the term"dumbwaiter" is still used rather than"lazy Susan". The reason

for the naming of it is still a mystery. One theory is that it was named after either Jefferson's or Edison's

daughter, both of whom were named Susan.

1. What is a "lazy Susan"?

A. A waitress

B. A convenient tool

C. A table

D. A cabinet

2. According to those who believed Thomas Jefferson invented the lazy Susan, ______.

A. his daughter was very lazy

B. the lazy Susan didn't exist until the 18th century

C. Thomas Edison was his friend

D. Thomas Edison didn't invent the phonograph

3. We can learn from the last paragraph that _______.

A. the lazy Susan can work by itself

B. the lazy Susan was named after Thomas Edison's daughter

C. how the lazy Susan got its name remains unknown

D. the lazy Susan was invented in Britain

4. The writer wrote the passage mainly to _______.

A. discuss how the lazy Susan was named

B. teach us how to make a lazy Susan

C. introduce Thomas Edison's inventions

D. tell us what a lazy Susan is and its origin

我国产业结构调整的政策取向主要包括( )。

A．调整工业生产结构

B．调整农业生产结构

C．加快发展先进制造业

D．促进服务业加快发展

E．加强基础产业基础设施建设

关于构造函数，以下说法正确的是（）。

A.构造函数在对象被创建时，自动被调用

B.构造函数需要程序员显式的调用

C.构造函数不能被重载

D.构造函数都是无参函数