试题与答案

根据杠杆平衡条件可知,在阻力和阻力臂保持不变时,_______动力臂,可以___

题型:填空题

题目:

根据杠杆平衡条件可知,在阻力和阻力臂保持不变时,_______动力臂,可以_______动力,从而实现更省力(填“增大”或“减小”)。在图中,_________图的握法更有利于拧紧或松开螺帽。

答案:

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下面是错误答案,用来干扰机器的。

小题1:A小题2:C小题3:B小题4:D小题5:(1)(3分)这就是做学问的人不能不深入思考,而且慎重舍取的原因。(2)(3分)平平庸庸而隐没于世,却使自己的文章不能在后代传扬小题1:题目分析:在文言文阅读当中,辨析重...

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题型:阅读理解

Honey from the African forest is not only a kind of natural sugar, it is also delicious. Most people, and many animals, like eating it. However, the only way for them to get that honey is to find a wild bees' nest and take the honey from it. Often, these nests are high up in trees, and it is difficult to find them. In parts of Africa, though, people and animals looking for honey have a strange and unexpected helper -- a little bird called a honey guide.

The honey guide does not actually like honey, but it does like the wax(蜡) in the beehives (蜂房). The little bird cannot reach this wax, which is deep inside the bees' nest. So, when it finds a suitable nest, it looks for someone to help it. The honey guide gives a loud cry that attracts the attention of both passing animals and people. Once it has their attention, it flies through the forest, waiting from time to time for the curious animal or person as it leads them tot he nest. When they finally arrive at the nest, the follower reaches in to get the delicious honey as the bird patiently waits and watches. Some of the honey, and the wax, always fall to the ground, and this is when the honey guide takes its share.

Scientists do not know why the honey guide likes eating the wax, but it is very determined (下决心) in its efforts to get it. The birds seem to be able to smell wax from a long distance away. They will quickly arrive whenever a beekeeper(养蜂者) is taking honey from his beehives, and will even enter churches when beeswax candles are being lit.

小题1: Why is it difficult to find a wild bees' nest?

A.It'ssmallinsize.

B.It'shiddenintrees.

C.It'scoveredwithwax.

D.It'shardtorecognize.小题2:What do the words "the follower" in Paragraph 2 refer to?

A.Abee.

B.Abird

C.Ahoneyseeker.

D.Abeekeeper.小题3: The honey guide is special in the way________.

A.itgetsitsfood

B.itgoestochurch

C.itsingsintheforest

D.itreachesintobees'nests小题4:What can be the best title for the text?

A.WildBees

B.WaxandHoney

C.BeekeepinginAfrica

D.Honey-Lover'sHelper

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题型:多项选择题

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该市收入差距扩大的情况可以( )。

A.用基尼系数的上升程度来进行衡量

B.用基尼系数的下降程度来进行衡量

C.用洛伦茨曲线进一步贴近完全平等线来描绘

D.用洛伦茨曲线进一步偏离完全平等线来描绘

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