竞技健美操竞赛套路时间为()。
A.1分30秒正负5秒
B.1分45秒正负5秒
C.2分30秒―3分钟之间
D.1分40秒―1分50秒之间
参考答案:A
I received a number of ________, but ________ of them is valuable to me.
A.advice; both
B.advice; all
C.suggestions; both
D.suggestions; none
对桥梁的承载能力、通行能力、抗洪能力周期性评定的周期一般为()年。
A.1
B.1~2
C.3~6
D.7~8