问题 综合

(7分)该图是我国东部某地等高线地形图,某校高中学生夏令营在图示区域进行了野外天文、地质、植被、聚落等综合考察活动。读图回答下列问题。

(1)同学们沿图中的登山线路行进,观察到沿途植被垂直变化不大,你认为主要原因是什么?(2分)

(2)同学们把夜晚宿营地点选在图中A处,从图中提供的信息简述理由。(2分)

(3)图示地区拟建一火情瞭望台,最佳位置应在________         处。(1分)

(4)若考察小组在D处突遇泥石流,①②③④四条逃生线路中最佳的是________。突临的一场暴雨,使位于B处的营员小明迷了路。请你给他一个独自走出深山密林的最佳办法。(2分)

答案

(1)沿线相对高度不够大,水热状况垂直分布不显著。(2分) 

(2)位于鞍部,地势相对平坦开阔。 (2分)

(3)山顶 (1分)           (4)  ②      顺河谷的溪水流向走。(2分)

(1)本题考查垂直地带性变化规律。变化差异与海拔高度有关。(2)宿营地点区位从地形、河流、地质安全等方面分析。(3)火情瞭望台位于海拔高,四周没有遮挡的位置。(4)泥石流逃生路径是垂直等高线向高处逃生。顺河流最终走出密林。

单项选择题
阅读理解

Car companies are developing vehicles that will plug into electric sockets,just like many laptops,digital cameras,cell phones and Mp4 do.Called“plug-in vehicles”,these cars will get most of their power from electricity. Their drivers won't have to stop at gas stations as often as usual.

The technology is more than just cool. In our car-filled world,plug-in vehicles could reduce the amount of gas we use,which keeps rising in cost now and then. Besides,driving around in these vehicles may even help the environment.Gas-burning cars produce a lot of greenhouse gas,which causes globe warming.

The first company-produced plug-in vehicles could hit the roads by 2010. But engineers still have a lot of work to do to make the technology practical and inexpensive.

Batteries(电池) are the biggest challenge. In the plug-in-vehicle world,Li-ion(锂离子)batteries are getting the most attention.These batteries can store a large amount of energy in a small package,and they last a longer time between charges.Li-ion batteries can fit laptops,cell phones,heart instruments and other similar pocket ones.

But because cars are so big and heavy, it would still require a suitcase-sized Li-ion batteries to power about 12km of driving.What's more,the batteries are much expensive.

“A car filled with batteries could go a long distance,”says Ted Bohn, an electrical engineer in Chicago.“But it couldn't pull any people.and it would cost $100,000.”

So researchers need to work out how to make batteries smaller and cheaper,among other questions.

“The answers don't exist yet,”Bohn says,“As a kid,I thought someone someplace knows the answer to everything.All of these questions haven't been decided.That's what engineering is about-making a guess,running tests and getting fine results.”

72.The passage mainly talks about        of a new car

A.the developing    B.the speed    C.the appearance D.the batteries

72.Which is true according to the passage?

A.The“plug-in vehicles”will use electricity completely as driving power.

B.The new technology will help protect our environment.

C.The technology of using electricity as driving is quite practical now.      

D.The biggest challenge of the new technology is that it will cost us more energy.

74.How does Bohn feel about the future of the technology according to the last paragraph?

A.Confident    B.Puzzled.    C.Worried. D.Disappointed.

75.According to the passage,the new technology is facing the following problems except that .

A.the new technology cannot come into use at present

B.the cost of the new technology is quite high

C.the government won't support the technology

D. the size of the batteries is too big at present