1、___ seems easy in theory seems difficult in practice. A. That B. With C. What D. It 2、___makes men different from the other animals is that they can think and speak. A...
19. He can___all the difficult problems in the book. A. work oul B. get off с. go through D. break out 20. I am not sure whether New York is___biggest city in___world or not. A. a;a B. a;the с. the ;the D. the;a Part II Cloze (20%) Directions: Th...
When you hear the word “farm”, you may imagine the countryside with cows and crops. But scientists say the farms of the future could be built in tall buildings in some large cities. It may be difficult to believe, but in fact, the technology for ...
Difficult and Severe Asthma in Children儿童困难和严重哮喘Federica Porcaro et al.DOI:10.3390/children7120286哮喘是影响儿童最常见的下呼吸道慢性炎症性疾病,对儿科医生来说仍是一...
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