Scientists are convinced______ the positive effect of laughter______ physical an
题型：不详难度：来源：
Scientists are convinced______ the positive effect of laughter______ physical and mental health.| A．of ; at | B．by ; in | C．of ; on | D．on ; at |
|
答案
| C |
解析
考察介词。Be convinced of 为固定词组，意为对……信服 effect on sth 意为对……的影响 为固定短语 ，所以选择C
句意为，科学家们对笑声对身心健康产生的影响深信不疑。 |
举一反三
It is illegal for a public official (政府官员) to ask people for gifts or money_____ favors(恩惠，帮助) to them.| A．in place of | B．in agreement with | | C．in exchange for | D．in spite of |
|
________ 18 June 1940, Churchill gave another fine speech when he drew attention ________ the courage of everyone defending Britain.| A．In, for | B．At, within | C．Beyond, at | D．On, to |
|
He will revenge himself____his neighbor, a mean (卑鄙的) officer, ____ the murder of his wife.| A．for; on. | B．on; for. | C．at; on. | D．on; at |
|
Don’t you think this sweater is too tight ____ the shoulder?| A．through | B．across | C．on | D．over |
|
| Customs vary greatly _______ country to country. |
最新试题
热门考点