If 3a=b and 3c=d,then bd=
A. 3ac
B. 3a+c
C. 6a+c
D. 9ac
E. 9a+c
查看答案
【B19】
A. common
B. low
C. prevalent
D. rare
What is the measure of the angle formed by the minute and hour hands of a clock at 1:50?
A. 90°
B. 95°
C. 105°
D. 115°
E. 120°
Which of the following CANNOT be expressed as the sum of three consecutive integers?
A. 18
B. 24
C. 28
D. 33
E. 36
【B7】
A. grown
B. producing
C. processed
D. cultivating