脊髓空洞症的病因可能有（） A.先天性发育异常 B.遗传所致 C.脊髓血液循环异常

The plant is dead. I ______it more water.

A．will give

B．would have been

C．must give

D．should have given

如图是光学显微镜的结构图，请指出（要写名称，可以不写数字）

（1）能够使标本放大到一定倍数的结构是①______和______．

（2）能反射光线的结构是______．

（3）转动时，使镜筒的升降范围较大的是[11]______；较小的是______．

（4）光线对好后，用来调节光线强弱的构造是⑦______；上面有大小不等的圆孔，叫做______．

（5）玻片标本应放置在⑤______上．

（6）如果将字母“b”置于显微镜下观察，视野中出现的是______．（d、p、q）

教育的功能是指教育对个人及社会发展的促进功能。

阅读理解

     Across the United States,there are several places where two independent towns grew together to

become one citybut kept both their names.

     WinstonSalem is one of them.It's a midsized city in what's called the plateau(high land),between the

Atlantic Coast and the inland mountains in the state of North Carolina.The Winston part is a relatively new place,founded early this century.It's home  to  the  nation's  biggest  openair  tobacco market.

     The giant R．J.Reynolds Tobacco Company's headquarters is in WinstonSalem,and Winston is the

name of one of Reynolds' bestknown cigarette brands.Fastgrowing Winston soon surrounded the much

older town of Salem,so in 1913,people in the area voted to combine them into a single place.

     From a historical and tourist point of view,Salem,or Old Salem,as it's called today,is the interesting and unusual part of town.

     Salem was founded in the 1700s by the Moravians.They spoke German,and their community was

religiously based,with single men and single women living apart in separate dormitories.The Moravians

greatly valued women's work and brainpower.In fact,one of the nation's oldest boarding schools for young womenthe Moravians' Salem Academy founded in 1772－is still in operation.

     Over the years,Salem lost its Moravian character.That all changed,though,when a nonprofit group

began to rehabilitate the historic area.These days Old Salem is what's called a living history museum,with

exhibits,music,and tours of 18thcentury houses,taverns and Moravian dormitory buildings just seven blocks from the tallest skyscraper in WinstonSalem.

     The historic community is booming again.Just as R．J.Reynolds is taking in millions of dollars making

cigarettes across town,Old Salem is generating about D|S15 million a year in tourism revenue and

donations.

1. From the passage we can know that________.

A. WinstonSalem is the name of a city

B. Salem is home to the tobacco market

C. the city WinstonSalem has two names

D. Old Salem is the name of a tobacco brand

2. It can be inferred from Paragraph 3 that________.

A. the two cities benefited each other

B. Salem developed faster than Winston

C. R.J.Reynolds Company has moved into Salem

D. the combination meets the wishes of the people

3. The city Salem is special for its________.

A. boarding school  

B. lifestyle and tradition

C. respect for brainpower  

D. religious belief

4. The underlined word  "rehabilitate"  in Paragraph 6 is closest in meaning to "________"．

A. reconstruct  

B. evaluate

C. enlarge  

D. decorate

5. What will probably be talked about in the following part?

A. Some other attractions in WinstonSalem.

B. How Winston makes profits from tourism.

C. Other examples of cities combined by two parts.

D. Something about the boarding school for women.

合同转让应当尊重旅游者。旅行社因不能成团，将已签约的旅游者转让给其他旅行社出团时，须征得旅游者的( )。

A．同意
B．口头同意
C．书面同意
D．默认