金融资产分为（）和（）金融资产。
A.债券类和股权类
B.债券类和基金类
C.股权类和基金类
D.基金类和所有权类
参考答案：A
With the successful launch of Tiangong-I, which was ______ breakthrough in space field, China's space dream took a step closer to ______ reality.
A. a; / B. the; a C. a; the D the; /
标定标准溶液时，平行试验的次数不得少于（）
A.4次
B.6次
C.8次
D.10次
