一个三角形最少有两个[ ]
A.锐角
B.直角
C.钝角
答案：A
The young man acted strangely during the interview. He made a bad________on the employer. [ ]
A. impression
B. expression
C. experience
D. opinion
( )年，中国工程咨询协会代表我国正式加入FIDIC。
A．1958B．1959C．1983D．1996
