生活中的下列物品，用有机合成材料制成的是（） A．木桶 _爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

生活中的下列物品，用有机合成材料制成的是（　　）

A．木桶

B．塑料油桶

C．纯棉袜子

D．不锈钢厨具

答案

答案：B

题目分析：有机合成材料必须具备三个特征：人工合成、有机物、高分子．A、木桶是用木材制成的，木材属于天然材料，故选项错误．B、塑料油桶是用塑料制成的，塑料属于三大合成材料之一，故选项正确．C、纯棉袜子是用棉线制成的，属于天然材料，故选项错误．D、不锈钢餐具是用不锈钢制成的，不锈钢是铁的合金，属于金属材料，故选项错误

填空题

集装箱船通常分（）船，半集装箱船，（）船。

完形填空

Mr Clarke works in a middle school. He likes reading and often 1 some books from the library. He keeps 2 to the radio every morning and reading 3 after supper. So he knows much and teaches well. His 4 worship（崇拜）him very much. Mike, Mr Clarke’s little son，is only nine. He 5 likes reading books. And he often asks his father some questions. Mr Clarke always thinks he’s too 6 to understand him and chooses_ 7 ones to answer. Of course the boy is not satisfied with（对…满意）it．
One day Mike read 8 about the electric lights（电灯）and was 9 　 it．When his father told him to do some housework，he went on thinking of it．He asked him 10 questions，and his father answered all．Then his father said proudly，“Fathers always know 11 than sons!”The boy thought for a while and said，“ 12 !”
　　“Oh? Why?”
　　Mike didn’t answer and asked， 13 ，“Who invented the electric lights?”
　　“ 14 .”answered Mr Clarke．
　　“Why didn’t his father invent them，then?”
Looking at his son，Mr Clarke didn’t know 15 to answer !

A．more ifficult

B．the most difficult

D．the easiest

A．worried about

B．interested in

B．Neither am I

D．I don’t think so

A．Thomas Brown

B．Allan Smith

C．Thomas Edison

D．Ron Jenkins