术前检查示心功能为Ⅲ级，射血分数（EF）估计应约为（）
A. 0.2
B. 0.3
C. 0.4
D. 0.5
E. 0.6
查看答案
I don’t think ______ (炫耀你懂得更多知识是不明智的) in front of the director, for it may offend him.
Questions 19 to 22 are based on the conversation you have just heard.
A. Common causes of anger.
B. Judging people’s behavior.
Changing people’s attitudes.
D. The effects of negative behavior.
Questions 11 to 18 are based on the conversation you have just heard.
A. Teachers like Prof. Johnson are rare.
B. Prof. Johnson has won a million dollars.
C. There are many teachers as good as Prof. Johnson.
D. Prof. Johnson is likely to be teaching at that school
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