旋覆花的功效是（）
A.降气
B.化痰行水
C.降逆止呕
D.宣散风热
E.清化热痰
参考答案：A, B, C
拍卖保留价通常是保密的，仅限委托人、拍卖人、公证人等有限人知情。 ( )
—Paul isn’t as________as Sandy. He often makes mistakes in his homework.
—That’s the main thing.
A．careless
B．more careful
C．more careless
D．careful
