关于关键字class和typename，下列表述正确的是A．程序中所有的typena_爱下问搜题

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问题单项选择题

关于关键字class和typename，下列表述正确的是

A．程序中所有的typename都可以替换为class

B．程序中所有的class都可以替换为typename

C．A和B都正确

D．A和B都不正确

答案

参考答案：A

解析：本题考核模板的概念。 C++中，模板形参具有三种形式：(1)typename＜参数名＞，(2)class＜参数名＞，(3)＜类型修饰符＞＜参数名＞，前两种形式是等价的，在声明模板参数时，关键字typename和class可以互换。但是在定义类的程序中，关键字class代表的含义是类，此时不能用 typename代替。

单项选择题

患儿，面色蜡黄，手有震颤，血红细胞计数3×10¹²／L，血红蛋白80g/L，血片中红细胞形态大小不等，以大红细胞为多，首先考虑（）。

A.营养性缺铁性贫血

B.营养性巨幼红细胞性贫血

C.营养性混合性贫血

D.生理性贫血

E.溶血性贫血

完形填空

This little story I’m about to tell you happened when I was 11 years old, and I’ll never forget it.
It was at my friend Jenny’s house after 36 one day, and we were doing our homework. While I was there, a friend of Jenny’s mom came over to 37. I didn’t know her name or 38 what her face looked like. I just 39 her hands, her voice and the lesson I 40 from her.
I can’t forget that she 41 her hands to introduce herself. It was so 42, I thought, rich fine skin; then I heard her saying, “Oh no, that is not 43 you shake hands. Let me teach you.” She didn’t do that at all in a condescending (屈尊的) manner. 44 that, I just remember her voice explaining the 45 of a good handshake of conveying (传达) a 46 sense of self-belief, of looking the other person in the eyes, and of making a warm 47. Hearing her friendly words, I first understand what being 48 meant.
I admired her for 49 time to teach me about one of the important things in life. I was grateful for her not talking down to me 50 I was 11 and didn’t know much. I also felt somewhat admired by the way she 51 me. It felt good to be talked to as a(n) 52, rather than as an 11-year-old child. I also 53 her telling me that if someone isn’t aware of something you should show him or her the right direction; don’t be afraid to 54 your knowledge.
I think of her every time I meet someone 55, and I’m so thankful for her little lesson.

C．reached out

小题8:A whom B .why C .when D. how

C．appreciated