可使用（）实现子查询。
A.IN
B.EXISTS
C.=
D.LIKE
E.BETWEEN
参考答案：A, B
He couldn't buy the dictionary because he had ________money with him.
A．a few
B．few
C．a little
D．little
将SO2气体通入BaCl2溶液中，未见白色沉淀，继续通入另一种气体立即产生沉淀，则通入的气体可能是（ ）
A．Cl2
B．CO2
C．H2S
D．CO
