问题 问答题

夏天烈日曝晒过的汽车,车内温度可达50℃以上.针对这一情况,市场上出现了一些汽车遮阳帘,汽车遮阳帘是否真的有遮阳效果?研究人员选取了普通型、加厚型和折叠型三款表面镀铝膜的汽车遮阳帘进行了以下实验.实验步骤如下:

①选取三辆颜色、型号相同的同款汽车,并排朝南停放在阳光充足的空旷地方.

②将三款汽车遮阳帘分别安装在汽车的前挡风玻璃后,关上车门,并编号.

③一段时间后,用灵敏温度计分别测量车内的温度.

(1)进行该实验的最佳时间是______.

A.早晨    B.中午    C.傍晚

(2)该实验设计中的不足之处是______.

答案

(1)要比较遮阳帘的作用,就要采用阳光充足的地方和时间,中午的阳光比较充足;

故选B.

(2)要看遮阳帘是否有作用,最好是把挂有遮阳帘的和没有挂遮阳帘的来进行比较;

故答案为:没有设置不装遮阳帘的对照组.

完形填空

Many solutions we seek with regard to achieving sustainability(可持续性) are within our reach. That’s the lesson our school’s Environment Club has learned over the past two years. We’ve reduced the amount of our waste at our school by 25 per cent. ___小题1:___ We have the evidence we need to suggest we are making a difference. If you are interested in leading your school on a similar journey of change, here are some tips.

__小题2:___

Examine the garbage can to find out how much of your school’s garbage could be picked out from the waste stream and be reused. We found that more than 80 percent of our waste could have been reused, recycled or composted(制成堆肥).

Prepare dustbins there.

___小题3:___ You will find you can cover the cost of the purchase of the dustbins within a few months simply by selling the bottles and other items you collect.

Compost the waste.

Start a composting system in your school. You may reduce your waste by as much as 50 percent. Be sure to talk with your teachers and your cafeteria staff to get them onside.

Share your success.

Let your community know what you’ve accomplished. __小题4:__ Ask your teachers if you can talk to their classes, let your parent group know what you’re doing, and present a report to the president of your school.

__小题5:___

Whether you spend a few moments in a quiet place or the whole day walking along a beautiful beach, time outdoors will remind you why the work you do for the environment is so worthwhile.

A.Dig in.

B.Reward yourself.

C.Do outdoor activities.

D.They’ll feel proud of you.E. We need to go further, and we will.

F. Invite your friends to join your cause.

G. Make sure every classroom has dustbins for recycling.

单项选择题 A1/A2型题