负荷试运行应避开( )。
A．春季
B．夏季
C．秋季
D．冬季
参考答案：D
There are so many kinds of Mp4 in the shop. We can’t decide .
A．what to buy
B．to buy what
C．which to buy
D．to buy which
为了大家很容易看出各种数量的多少，应该先用[ ]
A.条形统计图
B.折线统计图
C.扇形统计图
