You can make solar ovens from boxes or heavy paper.They will not catch fire.Paper burns at two hundred thirtytwo degrees Celsius.A solar cooker never gets that hot.Solar ovens cook food at low temperatures over long periods of time.This permits people to leave food to cook while they do other things.
1.Which of the following should be the best title for this text?
A.Cooking food with solar energy
B.How to make solar cookers
C.Introduce a new kind of energy
D.Different kinds of cookers
答案:A [主旨大意题。综合全文的内容我们可以看出,本文主要讲述了使用太阳能做饭这一现象。全文始终是围绕这个主题展开的。据此我们可以确定本题答案为A。]
2.From this passage we know that ________.
A.there is no wood for people to use while making a fire now
B.people have been using solar cookers for more than 200 years
C.solar energy is the cleanest energy on the earth
D.more and more people cook food on smoky fires
答案:B [推理判断题。根据第二段我们可以知道,世界上第一台太阳能烤炉是l767年发明的,据此推算,人类使用太阳能煮食已经有200多年的历史了。]
3.Parabolic cookers may be dangerous to us because ________.
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