下列式子: 1 − a / − b = -( a / b ) 2 − b / a = -( b / a ) 3 − b / a = b / − a 4-( b / − a )= b / a 其中成立的个数有( )个 .
A.
1
B.
2
C.
3
D.
4
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参考答案:
举一反三
【简答题】阅读理解。 'Well, we're in our new house. Let's get a new pet to go along with it,' Mrs. Brown said to her husband. 'That sounds like a very good idea,' he answered. 'Do you want to see the ads in the news...
【简答题】“Well, we're in our new house. Let's get a new pet to get along with it,” Mrs. Brown said to her husband.” That sounds like a pretty good idea,” he answered. “Do you want to see the ads in the newspap...