备考2017年大学英语四级改错题每日一练(2)

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文章摘要:备考2017年大学英语四级改错题每日一练(2),世祖白话八股光度法,东部圣像百纵千随。

赌球网址 鲤鱼小编 更新时间:2017-05-27

Word came from California of a new weapon in the war on household pests.
Two scientists work for a firm in California developed 1.__________  
a new method to eliminate insects with using dangerous chemicals.2.__________  
The new weapon—hot air.The basic idea is that 
insect pests can adjust to temperature much above normal.3.__________  
In laboratory experiments,cockroaches and termites can’t survive 
much more than a quarter of hour at 100 degrees 4.__________  
Fahrenheit or about fifty degrees centigrade. The new method involves 
covering a house with a huge tent,and fill it with air heated to 5.__________ 
around 65 degrees centigrade.
Hot air is forced in with fans and the tent keeps the heat inside the house.
Although termites try to escape by hiding in wood beams,6.__________ 
the heat treatment must be continued by four to six hours. 7.__________ 
But when it's all over and the insects are dead,
there are no toxic residues to danger humans or pets,and no 8.__________ 
funny smells.Scientists claim that there's no danger of fire too.9._________
Since very few household, materials will burn at 65 degrees centigrade. In fact, wood is prepared for construction use by drying
in the ovens at 100 degrees centigrade, that is substantially hotter. 10._________
 参考答案:
1. work → working 
2. with → without 
3. can adjust → can not adjust 
4. hour → an hour 
5. fill → filling 
6. Although → Since 
7. by → for 
8. danger → endanger
9. too → either
10. that → which
 

 

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