由二进制代码表示为十进制的方法称为()代码。
A.BCD
B.ABC
C.BAC
D.格雷
参考答案:A
— How is the weather in Shanghai today?
— ______. I'm having a picnic (野餐) with my friends in the park. [ ]
A. It is raining heavily
B. It often rains
C. I don't like rainy days at all
D. It is sunny
与股票和债券相比,证券投资基金是一种( )的投资品种。
A.高风险、高收益
B.低风险、低收益
C.低风险、高收益
D.风险相对适中、收益相对稳健