当市场表现出强烈的上升或下降趋势时，恒定混合资产配置策略的表现（）买入并持有策略。

A、优于

B、劣于

C、两者无法比较

D、以上说法都不正确

Hello, may I speak to Mike?（）

A.You are wanted on the telephone.

B.Who are you?

C.Just a second, please.

D.Can I take a message for him?