In the face of _____ failure, it is vital tha...

In the face of _____ failure, it is vital that we should keep up _____ good state of mind．

高二英语单项填空困难题查看答案及解析

In the face of _____ failure, it is vital that we should keep up _____ good state of mind．

高二英语单项填空简单题查看答案及解析

I hope, first of all, that we shall never lose _____ heart in face of _____ failure.

A．the; a            B．不填; the          C．不填; 不填        D．a; the

高二英语单项填空中等难度题查看答案及解析

In the face of ______ failure, it is the most important to keep up _____ good state of mind.

A. / ; a            B. a; /           C. the; /            D. /; the

高二英语单项填空简单题查看答案及解析

In the face of ______ failure, it is the most important to keep up _____ good state of mind．

A．/ ; a                B．a; /         C．the; /      D．/; the

高二英语单项填空中等难度题查看答案及解析

In face of ____ failure, it is the most important to keep up ____ good state of mind.

A. 不填, a      B. a, 不填             C. the, a          D.不填, the

高二英语单项填空简单题查看答案及解析

Temporary failure is not to be feared. We must bear it in mind that the pains-taking efforts we have made will ______ in the long run.

A. pay off                  B. take off             C. break off        D. work off

高二英语单项填空简单题查看答案及解析

A cellphone is one of the few things that we hold close to our faces all the time, and yet it could possibly explode - this is what made the recent Samsung’s Galaxy Note 7 smart-phone accidents so shocking.

According to technology news website The Verge, flawed（有瑕疵的）phone batteries might be to blame.

Even if you are not a science student, you probably know that it is common sense that the anode (the negative（负的）end of the battery) and the cathode (the positive end) should never touch. If they do, the battery will short-circuit（短路）, causing a powerful electrical reaction that can destroy the battery and cause a fire.

This is why all lithium-ion（锂离子）batteries - the kind that can be found in many of our devices like tablets and cameras - have a separator layer inside to stop the two ends from touching one another.

But somehow, the separators in some of the Samsung phones broke, causing explosions.

Overcharging is another problem that can make batteries heat up quickly. Fortunately, most batteries are designed to be able to automatically stop charging once they are fully charged. But again, this somehow failed to happen in some of the Samsung phones.

The two “somehows” may sound random（随机的）and hard to explain. But they actually both come from the fact that phone producers have been pushing the limits of batteries to meet customers’ demand for a longer battery life.

According to Lynden Archer, a materials scientist at Cornell University, US, we have already achieved 90 percent of the battery life possible from a lithium-ion battery. Customers’ demand that their devices get thinner has also given producers little choice but to try to put more power into thinner batteries.

“The more energy you put into a box, the more dangerous it’s going to be,” Billy Wu, a lecturer at Imperial College London, told The Guardian.

A thinner battery also means producers have to use thinner material for separators, and thinner material has more chance of breaking.

1.A separator layer is put in lithium-ion batteries in order to ___________.

A. ensure a longer battery life

B. prevent a battery from short circuiting

C. connect the anode and the cathode

D. reduce a certain electrical reaction

2.What are the direct reasons for the Samsung phone explosions?

A. Short circuiting and overheating

B. Pushing the limits of batteries

C. Overcharging and thinner batteries

D. Automatic charging and broken separators

3.Lynden Archer’s comments indicate that ___________.

A. demands for thinner cellphones are unreasonable

B. lithium-ion batteries can’t hold much more power than that they do now

C. producers can use 10 percent of a lithium-ion battery

D. new material for batteries is needed to meet consumers’ demands

4.What is the writer’s main purpose of writing the article?

A. To describe problems facing cellphone producers

B. To explain the reasons for the Samsung phone explosions

C. To teach us common sense when it comes to batteries

D. To warn us about the dangers of lithium-ion batteries

高二英语阅读理解中等难度题查看答案及解析

We are all faced with challenges constantly in every area of our lives.　 1 The truth is that you will have to deal with difficult problems throughout your life, whether it is in your personal life or career. Most of us get really afraid and run away from problems because we don’t want to accept reality. Running away from your problems is the worst thing you can do to deal with the challenges you are faced with. Here are some tips for you on learning how to deal with everyday challenges.Please bear in mind that you shouldn’t overact when coming across challenges. Overacting to a problem will cause you to make bad decisions. 2　 Next time you are faced with a challenge, stay calm so you can make smarter decisions.　 3　 If you cannot accept reality, you will feel very frustrated with your life. Once you can accept reality, you will be able to be calmer and think more clearly about how to get a step closer towards your goals every day.Many people make a habit of blaming others for all their problems. They fail to take full responsibility for the decisions they have made in life. The more you blame others for the challenges you are faced with, the more you will make people dislike you and not want to be around you.　 4 Don’t compare your lifestyle with others. Of course, it is really difficult not to compare ourselves with other people. However, the more often we do that, the more frustrated we will feel. 5 The key thing to remember is that you create your own story and success in life.

高二英语七选五中等难度题查看答案及解析

On the __________ first day, our teacher told us that it was vital that we __________ notes in English class.

A. very; take down　　 B. very; took down　 C. just; take down　　 D. just; took down

高二英语单项填空中等难度题查看答案及解析