问题 选择题

下列动物中没有飞翔能力的是(  )

A.鸵鸟

B.天鹅

C.大雁

D.蝙蝠

答案

鸟类的结构特征总是与其生活相适应的.如前肢变成翼,有大型的正羽,排成扇形,适于飞行;身体呈流线型,可以减少飞行时的阻力;体内有气囊,辅助肺完成双重呼吸,可以供给充足的氧气;有的骨中空,有的骨愈合,直肠很短,能减轻体重;胸肌发达,利于牵动两翼完成飞行动作.食量大、消化能力强,能为飞行提供充足的营养物质.

蝙蝠是胎生哺乳属于会飞的哺乳动物,鸵鸟、天鹅、大雁属于鸟类,但是鸵鸟由于体重较大不会飞.

故选:A

阅读理解

First, welcome to West Lake! I am glad to serve all of you.

Today you come here, you are sure to be attracted by its beauty. Hangzhou is famous for West Lake which is a famous fresh water lake, It lies in central Hangzhou, in Zhejiang Province of eastern China.

Traditionally, there are ten best-known spots on the West Lake. They are called Ten Scenes of West Lake by Qianlong Emperor. The West Lake is divided by three causeways called Su Di, Bai Di, and Yanggong Di. First I want to tell you the history of Bai Di.

In the middle of the Tang Dynasty, Zhen yuan era(785-804), poet Bai Juyi came to Hangzhou as a governor(官员,总督). He realized that the farmland nearby depended on the water of West Lake, but the old dyke(堤防)had collapsed(倒塌), the water of West Lake had dried out, and the local farmers suffered drought. He ordered the construction(修建)of a causeway of a stronger and taller dyke to solve the drought problem. The lives of local people improved over the following years. Then Bai Juyi had more free time to enjoy the beauty of West Lake. He visited West Lake almost every day. This causeway was later named after Bai Di in Bai Juyi's honor.

Next is Su Di. Spring Dawn on the Su Causeway is considered as the first of ten scenes. It was built by Su Dongpo, the great poet, during the Noah Song Dynasty. It is very beautiful in spring.

小题1:West Lake lies       .

A.in central Hangzhou

B.in eastern Hangzhou

C.in northern Hangzhou

D.in western Hangzhou小题2:The West Lake has      causeways.

A.two

B.three

C.five

D.ten小题3:Spring Dawn on the Su Causeway is listed as the      of Ten Scenes of West Lake.

A.first

B.second

C.third

D.fourth小题4:The above words are probably for        .

A.students

B.teachers

C.singers

D.tourists

单项选择题