施乐复印机公司提出，“我们要帮助您提高办公效率”，指的是企业的( )。A．信念 B

The couple went through all their pockets _________ their passports.

A．in honour of

B．search for

C．in search of

D．in memory of

阅读理解。

     We talk every day. When we have good news, we like to share it with our good friends and when

something terrible happens, we make it known to others soon. But can you imagine that a tree can talk and

share hews too? Of course, no tree moves lips and says words just as people do. Strange as it may sound,

though, some trees do manage to communicate with each other.

     Willow (柳树) trees are the best-known of these trees. When insects (昆虫) begin nibbling (叮咬) a

willow tree, the tree sends out a special smell at once. This smell tells the other willows that harmful insects

are coming near. All of them quickly make a chemical (化学物质) in their leaves. This chemical is bad to the

insects. The insects do not like it and they fly away soon. In this way, the willow trees protect themselves

from the insects.

     The next time when you take a walk in the woods, maybe the trees are "talking" to each other quietly. And

when someone says that trees cannot "talk", please tell them that even trees give messages to each other, too.

1. Willow trees send messages with _________.

A. words

B. movements

C. smells

D. sounds

2. The underlined word "lips" in the first paragraph means ________.

A. 树干

B. 嘴唇

C. 枝条

D. 手势

3. The passage tells us that some of the trees can ________.

A. speak just as people do

B. tell stories to others

C. communicate with each other

D. kill insects in the woods

4. According to the passage, the right order of the following is ________.

a. The willow tree gives out a smell.

b. The willow trees make a chemical in their leaves.

c. Insects fly away because of the chemical.

d. Insects begin nibbling a willow tree.

A. d-a-b-c

B. d-b-a-c

C. a-b-c-d

D. d-c-b-a

肺动脉高压较少发生于（）.

A.风湿性心脏病，主动脉瓣狭窄伴关闭不全

B.风湿性心脏病，二尖瓣狭窄伴关闭不全

C.风湿性心脏病，二尖瓣重度狭窄

D.风湿性心脏病，肺动脉瓣狭窄

E.风湿性心脏病，主动脉瓣狭窄伴关闭不全

下面关于高斯投影的说法不正确的是（）。

A.中央子午线和赤道投影面成互相垂直的直线

B.中央子午线投影后的长度无变化

C.经纬线投影后成互相垂直的直线

D.高斯投影属正形投影

婴儿从出生（）就要开始补充维生素D。

A、1周左右

B、2-3周左右

C、8-10周以后

D、15-20周以后