拥有庞大资金的交易专家在进行避险交易时，通常会一次性针对所有持股进行保值避险。( )
参考答案：错
下图为年内部分时段太阳直射点在地表的运动轨迹。则秋分日太阳直射点位于图中的
A、①
B、②
C、③
D、④
The boys ______ games after class. But they ______ football now. [ ]
A. play, are playing
B. are playing, play
C. play, play
D. are playing, are playing
