不等式1-x＜x+1的解集是M，|x+5|＞1的解集为N，则M与N的关系是（）

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问题选择题

不等式

1-x

＜x+1的解集是M，|x+5|＞1的解集为N，则M与N的关系是（　　）

A．M⊂N

B．N⊂M

C．M=N

D．M∩N=φ

答案

不等式

1-x

＜x+1⇒

1-x≥0

x+1＞0

1-x＜(x+1) 2

⇒0≤x≤1

∴解集M=[0，1]；

|x+5|＞1⇒x+5＞1或-x-5＞1⇒x＞-4或x＜-6

解集N=（-∞，-6）∪（-4，∞），

∴M⊂N

故选A．

填空题

根据句意及首字母提示补全单词

1. Most of us have r_________ and v_________ for meals.

2. My brother likes b_________ more than other fruits.

3. We have three m_________ a day.

4. Americans usually drink some c_________ in the afternoon.

5. Most stores regard(把……当作)their c_________ as their God.

6. Are you hungry? Let's find a r_________ to have a lu

7. Everyone in China likes eating d_________.

8. The teacher has something i_________ to tell you.

9. The volunteers p_________ great service for the foreign players.

10. The foreign friends are happy with Chinese food. Because Chinese food has different t_______.

填空题

分布式入侵检测系统可以分为( )、( )、对等式三种类型。