治疗食滞肠胃型泄泻的首选方为
A．保和丸B．凉膈散C．六磨汤D．半夏厚朴汤E．藿香正气散
参考答案：A
—Did Alan enjoy seeing his old friends yesterday? ?
—Yes, he did．He ______ his old friends for a long time．
A．didn’t see
B．hadn’t seen
C．hasn’t seen
D．wouldn’t see
下列动物行为中，属于学习行为的是（）
A.鸟的育雏
B.海豚钻圈
C.蜘蛛结网
D.蜜蜂采蜜
