对某项工程拟建场址3km范围内不同栖息地的哺乳动物、鸟类、两栖_爱下问搜题

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问题不定项选择

对某项工程拟建场址3km范围内不同栖息地的哺乳动物、鸟类、两栖类和爬行动物，按其处境的危险程度可分为（）。

A.濒危类

B.濒灭类

C.特殊类

D.普遍类

答案

参考答案：A, B, C

改错题

短文改错。
     此题要求改正所给短文中的错误。对标有题号的每一行做出判断：
     如有错误（每行只有一个错误），则按下列情况改正：
     此行多一个词：把多余的词用斜线（\）划掉, 在该行右边横线上写出该词,并也用斜线划掉。
     此行缺一个词：在缺词处加一个漏字符号（∧），在该行右边横线上写出该加的词。
     此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
     注意：原行没有错的不要改。

I was a high school student then, from low-income
family. So I have to work to support my family. My
first one job was to clean the tables in a small restaurant.
I still remember going there early and felt anxious about
the new world. I worked harder because I was afraid of
losing the job. At night, I was sometimes very tired to do
my homework. And I came to understand that was not
easy to earn money, and that knowledges could change
my life. So what I learned from the job, in the hard
way, was much more important as what I earned.

1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____
10. _____

单项选择题

(7)～(9)题基于下图所示的二叉树：

如果用llink-rlink法存储该二叉树，则各结点的指针域中共包含( )个空指针。

A．6

B．8

C．10

D．12