题目内容
19.请听第10段材料,回答第17至20题.17.What are Billy Cohn and Bud Frazier?
A.Reporters.
B.Teachers.
C.Doctors.
18.When could Lewis sit up in bed?
A.About 12 hours after the operation.
B.About 7 days after the operation.
C.About 12 days after the operation.
19.What do we know about the artificial(人造的) heart Lewis used?
A.It is larger and quieter.
B.It can last longer than previous ones.
C.It has saved 37 people.
20.What is the speaker's reaction to the use of the artificial heart?
A.Optimistic.
B.Doubtful.
C.Proud.
分析 略
解答 CBBA
点评 略
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