客户不可以通过银行购买的产品有？（）
A、股票
B、债券
C、基金
D、保险
参考答案：A
There were too many people in the park, _______ they still enjoyed staying there.[ ]
A. because
B. or
C. but
D. so
下列哪项乙型肝炎检查指标不容易被检测到（）
A.HBsAg
B.抗-HBs
C.HBcAg
D.抗-HBe
E.抗-HBc
