银行间债券市场的参与者有()。
A.境内商业银行
B.非银行金融机构
C.非金融机构
D.可经营人民币业务的外国银行分行
参考答案:A, B, C, D
解析:熟悉证券交易场所的含义。
计算:(6×975)•(3×974)=______(用科学记数法表示).
I wonder _______ there are so many natural disasters across the world in 2010.
A.why is it
B.it is why that
C.why is it that
D.why it is that