根据评定的信用等级中国人民银行重点支持类信用等级为（）。
A、aa+
B、aa
C、aa-
D、a+
参考答案：A
函数y＝f(x)在点P(5,f(5))处的切线方程是y＝－x＋8，则f(5)＋f′(5)＝________.
I don't have __________ to buy that kind of computer. It's too expensive. [ ]
A. few money
B. enough money
C. much too money
D. many money
