Why do the American doctors think of using laser light to treat heart disease?

A．Beeause laser light is quite powerful．

B．Because laser light is penetrating．

C．Because laser light can destroy the blocking materials in human’s artery．

D．Because laser light can travel through the human body．

[单选题]Why do you think they had not a backup computer?A． Because it was easy down.B． Because it was very expensive.C． Because it was not advanced enough.D． Because it was not as big as the main computer.

[主观题]Why do you think you were successful in your last job?你为什么认为自己在前一份工作中做得很成功？

[单选题]24，In this passage，doctors think that teenagers should eat more ____．A． food with no vitaminsB． fat and sugarC． vegetables and fruitsD． salt and oil

[问答题]Do you think you can do it by yourself?

[问答题]Do you think you can do it by yourself?

[问答题]Do you think you can do it by yourself?

[单选题]Why does the author think it necessary to bring order to the Internet_________?A． Because its database is disorganized.B． Because the information required is specific.C． Because its information is diverse and widespread.D． All of the above.

[单选题]Why does the author think the BMGF is the most innovative and successful in history? _________.A． Because their money is ruled to be given to the really needy people.B． Because they insist that good intentions should lead to good results.C． Because t

[单选题]Why did American city residents want to live in the suburbs after World War Ⅱ?A． Because older American cities were dying.B． Because they were richer and needed more space.C． Because cities contained the wont pare of society.D． Because they could har

[单选题]--Do you think it will snow tomorrow?-- ______.A． Yes, I think itB． I'm afraid soC． I don't believeD． I don't hope so