树脂含水率越小，表明树脂（） A.交联度越低 B.交换能力越低 _爱下问搜题

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问题单项选择题

树脂含水率越小，表明树脂（）

A.交联度越低

B.交换能力越低

C.活性基团越多

D.交换能力越大

答案

参考答案：B

阅读理解

Sally 喜欢收集新闻图片，因为她知道每一幅图片的背后都蕴藏着一个故事。你知道以下四幅图片
背后的故事吗？请把A、B、C、D四则简要新闻故事与81~84的新闻图片配对。

A
On top of the world
On May 8, the Olympic flame (火焰) was lit on the top of Mount
Zhumulangma! It was a historic moment for China.

B
We'll beat this Soldiers and policemen have been sent into Sichuan soon
after the 8.0 earthquake. They are helping there.

C
A youthful president At the age of 42, he became the youngest president
of modern Russia.

D
Making friends at last "Getting to know each other better is the basis (基础)
of friendship and should be started with youth exchanges," said President Hu
Jintao during his five-day "warm-spring" trip to Japan.

1.______2.______3.______4.______

选择题

今年我国西南旱情严重，政府多次开展人工降雨活动．下列物质可用于人工降雨的是（　　）

A．氮气

B．干冰

C．水

D．面粉