最不利于大气污染物扩散的地形是（） A.高山 B.平原 C.丘陵 D.海岸或河岸 E

阅读理解。

     Winter is a time for many exciting sports: sledding (雪橇), skating and skiing. Skating and skiing needs

lots of skills (技巧). Sledding gives you good exercise and is lots of fun!

     A sled looks like a boat. It can move easily over snow or ice. Early sleds were made of wood. Now

some better sleds are made of glass.

     Sleds can be pulled by animals. In some very cold parts of the world, people make animals like dogs,

horses, and reindeer (驯鹿) pull goods or people in sleds.

      People also sled for sports and fun. Driving a sled does not need much skill. The driver gives a kick

(踢) in the snow to start the sled. He or she can also ask someone else for help. In a sled, there can be one

person or several.

      Usually, you have to lie on your back, feet first in a sled. As you travel, you move your body and feet

to keep it in the right direction (方向). 

      There is a special sled called the skeleton sled (骨架雪橇). It's very different.

      On a skeleton, you lie on your stomach and drive the sled in a head-first way. It is very fast! Many

are afraid to ride it. But once they try it they want to do it again!

阅读短文，回答下列问题：

1. What are sleds made of?

2. What kind of animals can pull sleds?

3. What are sleds used for? 

4. How do people sled? Describe the process.

5. What is a skeleton sled like?  

选出成语使用正确的一项

A．他为人豪爽，交游甚广，朋友可谓汗牛充栋。

B．这篇论文观点陈旧，论据不当，文字拖沓，只能是不刊之论。

C．唐代“草圣”张旭的草书水平之高，可谓登峰造极。

D．但愿该书的出版能够不孚众望，同时也衷心希望读者提出批评。

下面一组句子中，属于化用或改选古人诗词名句的三句是[ ]

①碧云天，黄花地，西风紧，北雁南飞。

②伯劳东去燕西飞，未登程先问归期。

③鞍马秋风里，最难调护，最要扶持。

④量这些大小车儿如何载得起?

⑤淋漓襟袖啼红泪，比司马青衫更湿。

A．①②⑤

B．①②③

C．①③④  

D．①②④

企业外币业务所形成的汇兑差额，可能计入的科目有( )。

A．财务赞用

B．公允价值变动损益

C．在建工程

D．投资收益

善治肝胃气滞，胁痛胸闷，久咳痰多的药物是（）。

A.青皮

B.乌药

C.枳壳

D.佛手