问题 选择题

蝙蝠与家鸽都适于飞行.但蝙蝠是哺乳类而不是鸟类,它特有的特征是(  )

A.双重呼吸

B.体温恒定

C.心脏四腔

D.胎生哺乳

答案

体温恒定、心脏由四个腔构成是哺乳类和鸟类都具有的特征;只有鸟类才具有双重呼吸的现象.鸟类是体内受精、卵生,具有孵卵、育雏等行为,只有哺乳类是胎生哺乳的.即胎生哺乳是哺乳动物特有的生殖发育现象.因蝙蝠是胎生哺乳,所以属于哺乳动物,.

故选:D

阅读理解

You may not  have heard of Ashoka,  but for the past 27 years,this association, founded by Bill Drayton, has fought  poverty (贫穷)and sickness, promoted education and  encouraged small businesses. To support these worthy causes, Ashoka provides money for the world's most  promising "changemakers" seeking to solve (解决) urgent problems and would like to create a  world in which every citizen is a changemaker.

Drayton believes that anyone can become an agent for change. The important thing is to simply give yourself permission. If you see a problem that you care about, you can help solve it. The young in particular are willing to accept this concept because at heart every child wants to grow into a happy, healthy,  contributing adult. In fact It is many young people's ambition to set up programmes or businesses that improve social conditions. An excellent example is an Ashoka project started in 1995 in Dhaka, which handled the rubbish problem facing the city ,helped local farmers and provided an income for poor people there .

When Masqsood and Iftekhar began to study the problem of all the uncollected rubbish that lay in Dhaka’s streets,Attracting tats and disease , they discovered that 80% of it was natural waste . So they educated the poor people in the city to compost (把……制成堆粪)this waste . They knew that they would have a market for the end product because local farmers were struggling with chemical ferntilisers (化肥) which were expensive and had reduced the natural minerals in the soil over the years . At first , they were refused ,but once they were able to persuade them that there was money to be made , the project took off. In 2009 sales were $14,000.

Drayton is optimistic that in ten years Ashoka will be making really serious ,practical progress in bringing about social change by changing the way we look at economic development.

小题1:Which of the following could be the best title for the passage?

A.changemakers

B.Businessmen

C.Social Conditions

D.Rubbish Problem小题2:The underlined word "them" in Paragraph 3 probably refers to"       "

A.the local farmers

B.Masqsood and Iftekhar

C.Drayton and his team

D.the poor people in Dhaka小题3:It can be concluded from the passage that anyone can become a changemaker if he      .

A.considers Drayton's concept

B.gets permission from Ashoka

C.tries to improve social conditions

D.is a young, happy and healthy adult小题4:The authors attitude towards Ashoka's program can be described as        

A.changing

B.forgiving

C.cautious

D.Positive

问答题 论述题