下列应用杠杆原理工作的工具中,费力的是[ ] A.铡刀 B.汽水瓶起盖器的使用

题型:选择题

问题:

下列应用杠杆原理工作的工具中,费力的是[ ]

A.铡刀

B.汽水瓶起盖器的使用

C.钓鱼杆

D.剪铁皮的剪子

考点:杠杆的分类
题型:选择题

下面几个语句,在收入《语文》教材时作了改动,使之简洁、明确。假如你是“编者”,将如何修改?在原句上删改

还有一种立体会活动的书。也很吸引人。它的插图都是立体的。当你把书打开的时候,书里的人和动物马上会站起来,跃然纸上,栩栩如生。

题型:选择题

人们装出他们互相很关心,而实际上并非如此。

A.是

B.否

题型:选择题

That year, in the local school, there was a new math teacher, as well as some new pupils. One of the new kids was the stupidest child that anyone had ever seen. It made no difference how quickly or how slowly they tried explaining numbers to him; he would always end up saying something enormously stupid. Like two plus two was five, seven times three was twenty-seven, or a triangle had thirty corners...

Before this boy arrived, math lessons had been the most boring of all. Now they were great fun. Encouraged by the new teacher, the children would listen to the pieces of nonsense spouted by the new kid, and they would have to correct his mistakes.

Whenever the new teacher asked questions, the stupid kid would stand up but made the wrong answers, the other students all wanted to be the first to find his mistakes, and then think up the most original ways to explain them. To do this they used all kinds of stuff: sweets, playing cards, oranges, paper planes, etc. It didn't seem like any of this bothered the new kid.

However,little Lewis was sure that it was bound to make him feel sad inside. Lewis was sure he would see him crying. So,one day, he decided to follow the new kid home after school. On leaving school, the new kid walked a few minutes to a local park, and there he waited for a while, until someone came along to meet him...

It was the new teacher!

The teacher gave the new kid a hug, and off they went, hand in hand. Following from a distance, Lewis could hear they were talking about math.

小题1:The math lessons became interesting because of the new teacher's ______.

A.creativity

B.imagination

C.responsibility

D.curiosity小题2:The passage implies that the stupidest child ______.

A.was in great need of the math teacher's help after class

B.was by no means slow in math

C.had no gift for math and was slow to learn it

D.disliked both the new math teacher and his lessons小题3:According to the passage, Lewis followed the stupid kid in order to ______.

A.learn about where he lived

B.find out if he felt upset

C.say something to comfort him

D.make friends with him小题4:What does the underlined word “this” in the third paragraph refer to?

A.To find the new kid's mistakes.

B.To think up the most original ways to explain.

C.To use all kinds of stuff.

D.To follow him home after school.

题型:选择题

17世纪被誉为“荷兰时代”,荷兰成为“模范国家”、“标准的资本主义国家”,荷兰人被誉为“海上马车夫”等,但到了17世纪晚期荷兰却风光不再,导致其急剧衰落的最主要原因是[ ]

A.缺乏保持高速扩张所需的资源

B.商业资本发达但工业资本不足

C.英法颁布一系列歧视性的法令

D.三次英荷战争中失去殖民优势

题型:选择题

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