问题 选择题

全球气候变化会引起地理环境的变化。据此完成问题。

小题1:下列现象中,与全球气候变暖有关的是

①环太平洋带火山、地震频发   ②图瓦卢等岛国的部分陆地被海水淹没

③温带地区树枝提前萌发新芽   ④全球灾害性天气频繁出现

A.②③④

B.①②③

C.①③④

D.①②④小题2:全球气候变暖对人类活动可能造成的影响是

A.低纬度地区农作物产量成倍增加

B.中纬度地区采暖耗能有所减少

C.北温带小麦播种面积明显增加

D.南温带农作物病虫害迅速减少

答案

小题1:A

小题2:B

题目分析:

小题1:组合选择题可采用排除法,火山、地震的发生主要是由于地球内力作用的结果,而与全球气候变暖关系不大,①错误。

小题2:由于全球变暖对全球降水量的影响,低纬度地区农作物的产量一般呈下降趋势,A错误;由于气温升高,故中纬度地区采暖耗能减少,B正确;北温带地区由于蒸发加大,故可能退化为草原,C错误;温带地区由于气温升高,冬季的寒冷天气减少,故病虫害将增多,D错误。

点评:本题解题的关键是掌握全球变暖对自然环境和人类活动的影响,可调用课本相关内容分析,属于知识性试题。

完形填空
Imagine the situation. You are driving a car along a desert or on a mountain. You have no idea        you are. You passed the last house two hours ago. Then your      breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a        with you. This invention may be able to help you. It is a device(装置) which uses satellites to find the user’s position(位置). It can find your position to within 20 metres. A GPS cannot start your car, but at least you will         where you are.
GPS, which means Global Positioning System, is a small        receiver. It looks like a mobile phone. You can hold it in your hand, or put in your pocket. It is sometimes put into a watch or a        . We also find GPS devices in cars, planes, or boats. Some of these devices have electronic       , so you know where you are. For example, in a city they can tell you the name of the         .

There are       parts to the Global Positioning System. The first part is the     . You can either hold it in your hand      have it fixed into your car, plane, etc. The second part is a group of satellites orbiting the Earth. The receiver contacts at least four of the satellites and calculates(计算) its position. The third part of the system is a network of ground stations. They are all over the world. They       the satellites and make sure they are working well.
Some people think that in the future the GPS will be as        as the mobile. They are becoming       and more and more accurate(精确的). There are also new uses for the GPS. Perhaps they will become like       . Everyone will have one and you will never be lost again.
小题1:
A.whereB.what C.whoD.how
小题2:
A.ship B.carC.trainD.plane
小题3:
A.watchB.ring C.clockD.GPS
小题4:
A.adviseB.know C.representD.speak
小题5:
A.radioB.TVC.robotD.machine
小题6:
A.room B.officeC.road D.mobile phone
小题7:
A.partsB.maps C.videoD.music
小题8:
A.studioB.teenager C.busD.street
小题9:
A.fiveB.four C.threeD.two
小题10:
A.sender B.receiver C.Internet D.system
小题11:
A.and B.then C.butD.or
小题12:
A.control B.achieveC.allowD.imagine
小题13:
A.expensiveB.specialC.newD.common
小题14:
A.cheaperB.easierC.more expensiveD.bigger
小题15:
A.computersB.robotsC.satellitesD.watches
单项选择题