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[单选题]
______ that the earth is the only planet for living beings?(1分)
A
Used it to be thought
B
Does it used to be thought
C
Do it used to be thought
D
Used to it be thought
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试题答案：
A
答案解释：
相关题目
I _____my wallet when I was shopping in the store.
The education____ for the coming year is about $ 4 billion, which is much more than what people expected.
He sat there with his eyes upon the ceilinG.(1分)
When the disabled sportsman won a gold medal,a lot of people him on his Success．(1分)
The news came as quite a shock to us, but he seemed to be_________ surprised.(1分)
4.5What is the best title of this passage?____(1分)
1.Friction is a force which opposes motion. Much of the energy supplied to a complicated machine with many moving parts is wasted in overcoming this opposition. The energy is converted into useless heat. The amount thus lost can be considerably reduced and the life of the machine prolonged by careful lubrication. This reduction improves the efficiency of the machine. Another way in which friction is reduced is to substitute roller or ball bearings for the earlier type of bearing, in which the surfaces in contact move by sliding. Bearings of these later types are used very extensively in many kinds of modern machinery.It must not be assumed, however, that friction is always a disadvantage. In many instances it is highly important. Belts are often used in conveying power from one machine to another. In the absence of friction, this could not be done. The driving wheel would not run the belt, neither would the belt run the wheel to driver. Without friction, then, belted machinery could not be used. Again in the case of all motor vehicles, friction is essential in the operation of the brake. Were there no friction, there could be no brake. But even this illustration does not give an adequate picture of the importance of friction. The vehicle could not even be started if it were not for the friction exerted between the tires and the road. Nails hold in wood, and screws hold in either wood or metal by reason of friction, without which they would be useless. Walking is difficult enough on an icy pavement, but it would be wholly impossible if there were no friction at all between the shoe and the pavement.(5分)1.1 Friction arises when____.(1分)A. an opposing force of motion exists B. the energy is wastedC. everything is motionlessD. a complicated machine is supplied with energy
23. Connection is a powerful tool helping you learn better. Using connection, you need to take information and connect it to images, examples and things you already understan However, as a skill, this takes some time to develop and it often fails when you face very hard material, and it can also be misapplied，particularly if it’s used as a direct replacement for practice. Here are some ways I’ve used it:While learning Chinese, I would recognize the radicals (部首）of the characters and try to form a mental picture either with those radicals or the character meaning or the pronunciation, or all three. While studying international business law in France, I used the link and peg (挂钩）method to link the date and place of a particular treaty(协约）which was signed to the name of the treaty. While studying accounting, when I couldn’t remember a rule, I’d make a mental image that encapsulated (概述）it. While learning biology, whenever I couldn’t remember a chemical, I made a list of its properties (性能)，turned those properties into images and linked that to the way the name sounds.When you’re trying to memorize a lot of information that isn’t well connected, focus on quick and loose images that will help you translate the information, even if they don’t represent it well.(10分)23.1 What the author is talking about in this passage is .(2分)A. a tool which helps you do reading betterB. a method which helps you learn better C. a tool which helps you do accounting betterD. a method which helps you do chemical experiment better
There is still____ hope of our getting there in time. Let's hurry.
Mistakes don't just happen; they occur for a reason. Find out the reason and then making the mistake becomes _____.(1分)
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（）是指对陷入财务困境、但仍有专辑的企业，根据一定程序进行重新整顿，使企业得以复兴的做法。
2.
5．30年代首倡传记文学的是
3.
38．
4.
组织的第一要素是
5.
技术开犮合同履行中，若出现当事人无法克服的技术困难，从而导致开发失败或部分失敗的，对此风险承担，如果当事人没有约定，或者约定不明的，且当丰人无法通过补充协议，也没有交易习惯可以遵循的，其风险由（）。
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