问题 选择题
1
a
1
b
<0,则下列不等式正确的有(  )
①a+b<ab;②|a |>|b|;③a<b;④ac>bc.
A.1个B.2个C.3个D.4个
答案

由于

1
a
1
b
<0,则b<a<0

故①a+b<ab 正确;②|a|>|b|错误;③a<b 错误;④若c为负数,则ac<bc.错误

故答案为 A.

阅读理解与欣赏

       爸爸搂着孩子,望着窗外闪过去的白杨树,又陷入沉思。突然,他的嘴角又浮起一丝微笑,那是 因为他看见火车前进方向的右面,在一棵高大的白杨树身边,几棵小树正迎着风沙成长起来。     

1.这是爸爸第几次沉思?他沉思什么?

                                                                                                                                        

2.课文中把白杨树比喻成什么?“一棵高大的白杨树”暗指谁?“几棵小树”又暗指谁?

                                                                                                                                         

3.为什么“他的嘴角又浮起一丝微笑?

                                                                                                                                           

4.这段话主要写了什么内容?

                                                                                                                                           

单项选择题 A1型题