试题与答案

They missed the school bus, _____ they w

题型:选择题

题目:

They missed the school bus, _____ they were late for class.

A.or

B.but

C.because

D.so

答案:

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下面是错误答案,用来干扰机器的。

A、水蒸气和其它杂质占0.03%,遇冷会形成小水珠,故选项正确;B、气体的溶解度随压强的减小而减小,故选项正确;C、铁锈疏松多孔,易附着氧气和水分,要及时除去,故选项正确;D、是因为摩擦易起静电火花,故选项...

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题型:完形填空

Any car accident is frightening, but an accident in which your vehicle is thrown into the water, with you trapped inside, is absolutely terrifying.__小题1:__ However, most deaths result from panic, without a plan or understanding what is happening to the car in the water.By adopting a brace(支撑) position, acting decisively and getting out fast,you can save yourself from a sinking vehicle.

Brace yourself for impact(撞击力).As soon as you're aware that you're going off the road and into a body of water,adopt a brace position.The impact could set off the airbag system in your vehicle,so you should place both hands on the steering wheel in the  “ten and two” position.

Undo your seatbelt.__小题2:__ Unbuckle the children,starting with the oldest first.Forget the cellphone call.Your car isn't going to wait for you to make the call.

_小题3:_ Leave the door alone at this stage and concentrate on the window.A car's electrical system should work for up to three minutes in water,so try the method of opening it electronically first.Many people don't think about the window as an escape option either because of panic or misinformation about doors and sinking.

Break the window.If you aren't able to open the window,or it only opens halfway,you'll need to break it with an object or your foot.It may feel counter­intuitive(有悖常理的) to let water into the car._小题4:__

Escape when the car has equalized.If it has reached the dramatic stage where the car cabin has been filled with water and it has become balanced,you must move quickly and effectively to ensure your survival._小题5:__ While there is still air in the car,take slow,deep breaths and focus on what you're doing.

A.Open the window as soon as you hit the water.

B.Surviving a sinking car is not as difficult as you think.

C.It takes 60 to 120 seconds for a car to fill up with water usually.

D.Such accidents are particularly dangerous to the risk of drowning.E.In conclusion,if you know what to do in the water,you will be safe.

F.This is the first thing to attend to,yet it often gets forgotten in the panic.

G.But the sooner the window is open,the sooner you can escape directly through it.

1.______ 2.______ 3.______ 4.______ 5.______

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题型:单项选择题

基于以下题干:
一个教会学校的合唱团计划在七个城市H、L、P、R、T、V和Y举行音乐会。音乐会的时间安排是,从九月份到次年三月份,每月举行一场,并受下列条件限制:
(1)在H市举行音乐会的月份必须早于在Y市举行音乐会的月份。
(2)在R市举行音乐会的月份必须紧接在T市举行音乐会的月份之前。
(3)在L市举行的音乐会必须是在一月份。
(4)在P市举行的音乐会必须或者在九月份或者在次年三月份。

如果二月份在V市举行音乐会,那么下列哪项必定是真的( )

A.在H市举行音乐会的时间在L市之前。

B.在L市举行音乐会的时间在Y市之前。

C.在R市举行音乐会的时间在Y市之前。

D.在T市举行音乐会的时间在H市之前。

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