问题 选择题

荒漠中生活的骆驼,尿液非常少,当它的体温升到46℃是才会出汗,这是骆驼对(  )

A.荒漠变化的适应

B.干旱环境的适应

C.温度变化的适应

D.对自己身体状况的适应

答案

生物对环境的适应是普遍存在的.现在生存的每一种生物,都具有与环境相适应的形态结构、生理特征或行为.

骆驼一般不出汗,而且尿液非常少,当它的体温升到46℃是才会出汗,可以减少水分的散失,与干旱的荒漠环境相适应的.

故选:B.

单项选择题
阅读理解

Just because you are in a wheelchair doesn’t mean you can’t enjoy the competitiveness(竞争) —the all-around fun —that playing sports offers you. More and more wheelchair users are playing sports every day —some even on a professional level. The following are just a few examples of the different choices you have.

     Wheelchair basketball is a very common wheelchair sport. It was started over forty years ago as part of a medical recovery(康复) program. Over the years it has grown rapidly. Today wheelchair basketball is a professional sport that has more than 180 teams across the United States. In order to play wheelchair basketball, it is essential to have a lightweight wheelchair. Several different kinds of sports wheelchairs are on the market today just for sports fans.

     Another wheelchair sport, quad rugby(橄榄球), was specifically designed for people who can’t move their arms or legs and are unable to play wheelchair basketball. It is a mixture of wheelchair basketball and ice hockey. To play the game you must have two teams of four players each.

     Power soccer is another fun wheelchair sport that can be very fun and exciting. Players in power soccer must have an electric wheelchair. Two teams have two 30-minute halves to push the soccer ball over the other team’s goal line. The first team to reach the other team’s goal line most frequently wins.

     Based on the sport you choose to take part in, there are several things you can buy for your wheelchair, including belts, gloves, bags for carrying things, drink holders and special back supports.

小题1:In which part of the newspaper will you read this passage?

    

A.Technology.

B.Society.

C.Culture.

D.Health.小题2:In the beginning, wheelchair basketball was started for the purpose of ______.

A.holding professional games around the US

B.spreading the sport all over the US

C.helping patients return to a normal life

D.making people want to play sports小题3:What is the main idea of the passage?

 

A.To introduce some possible sports to wheelchair users.

B.To introduce some products to the wheelchair users.

C.To encourage wheelchair users to compete with each other.

D.To talk about the differences between these sports.