2A lot of tests ___ on a large number of rats in the past twoyears.A.have been carried outB.were carried outC.have been carried onD.were carried on 3 A lot of tests ___ on a large number of rats in the past twoyears. A. have been carried out B. were carried out C. ...
D.butterflies have disappeared in many countries (3) The underlined word "decline" is closest in meaning to . A.rise B.fall C.deam D.change (4) If the number of insects keeps getting smaller, . A.humans might fall ill more easily B.farmers won't be able to grow food C.rats and...
Long ago, people in Hamelin were greatly worried about the large number of rats everywhere in the town. They tried everything to keep them away, but nothing ever worked. One day, a stranger named the Pied Piper came to the town. He said, “I’ll help you catch rats.” The townspeop...
(4)What can be inferred from the passage? CA. More diseases will be brought to cities by rats and mice.B. Dr. Ben reminded us to prevent more insects from dying.C. Research on the survival of insects may be helpful to humans.D. In the future, it isn't important for farmers to ...
A lot of tests ___ on a large number of rats in the past two years. A.have been carried out B.were carried out C.have been carried on D.were carried on 试题答案 在线课程 答案:A 提示: 在过去两年中,我们做的事情应该用完成时,carry on继续开展,坚持,carry out执行 练习册系列...
To make the cats do better in catching rats, the company's workers have a good 33 to raise cats. They don't give the cats too much to eat, 34 the cats have to look for rats as their food. This way is 35 . The cats often walk around barns (谷仓) and the rats always stay far...
T hey pioneered the use of Africangiant rat, which can be found in most of sub-Saharan African nations, in landmine detection to free people from the terrors of the explosive leftovers of war. They breed and train African giant rats for the job. T hese trained rats, called "HeroRATs,"...
A lot of tests ___ on a large number of rats in the past two years. A.have been carried out B.were carried out C.have been carried on D.were carried on查看答案和解析>> 科目: 来源: 题型:014 —Would you like to have a walk with us? -___ A.A moment, I’d like to B....
Rat race; There are more rats in Scotland than humans and their number is growing. As the battle to control their spread goes on, is it time to get them - before they get us?Words Jackie McGlone
A number of giant rats are hidden in the fields or forests.B. Violent robbers may come out and hurt innocent civilians.C. People may step onto a landmine(地雷) and get injured.D. Other roads have a litter problem, which spoils good mood.(2)A. It is a rare species of rat.B. It...