_________ it comes to traffic rules, I often ...

_________ it comes to traffic rules, I often come across such cases __________ the local drivers obviously know them but won’t follow them.

A. If; why　　　　　　　　　　 B. When; which

C. Once; as　　　　　　 　　 D. When; where

高二英语单项填空中等难度题查看答案及解析

When I come across a good article in reading newspapers, I often want to cut and keep it．But just as I am about to do so, I find the article on the 36 side is as much interesting．It may be a discussion of the way to 37in good health, or 38 about how to behave and conduct oneself in society．If I cut the front article, the opposite one is likely to 39   damage, leaving out half of it or keeping the text 40  the title．Therefore, the scissors would 41 before they start, 42   halfway done when I find out the 43   result．

Sometimes two things are to be done at the same time, both worth your 44 ．You can only take up one of them, the other has to wait or be 45 up．

But you know the future is unpredictable—the changed situation may not allow you to do what is left 46  ．Thus you are 47   in a difficult position and feel sad．How 48 that nice chances and brilliant ideas should gather around all at once? It may happen that your life 49 greatly on your preference of one choice to the other．

In fact that is what 50  is like: we are often 51   with the two opposite sides of a thing which are both desirable like a newspaper cutting．It often occurs that your attention is drawn to one thing only  52   we get into another．The 53 may be more important than the latter and give rise to divided mind．I  54   remember a philosopher's remarks: "When one door shuts, another opens in life．" So a casual 55   may not be a bad one．

高二英语完型填空困难题查看答案及解析

Where was it  ______ you _______ our maths teacher?

高二英语单项填空中等难度题查看答案及解析

请认真阅读下列短文，并根据所读内容在文章后表格中填入最恰当的单词。

注意：每空一词

When it comes to making sure our food is safe, we are often advised to wash vegetables and fruits before eating. This has been a good method recommended by food safety experts. However, is this way of cleaning also useful for raw meat? No! The US Departement of Agriculture hs been warning people against washing raw meat before cooking , as it can do more harm than good to our health. Then, why do people want to wash raw meat? Here are some answers.

Some people complain that the unpleasant smell coming from the chicken forces them to wash it.Well, this might never happen if you have bought it from a reliable source. Also, many people say that it helps to get rid of the sliminess(粘连) of the store-bought chicken. And others just want to remove the bacteria from it. But the idea that washing meat helps to clean the chicken is only partly true. This is because some of the bacteria remain firm on the surface, though the meat has been washed several times.

In fact, the surface of the chicken is often polluted with a lot of bacteria. So, when you wash the meat under the tap, it can lead to　 the bacteria being removed from the meat’s surface, and spreading all over the kitchen. These small infected(受到污染的)water drops can move as far as half a meter. So if you have kept any ready-to-serve dishes on your kitchen top, they are likely to get polluted, and may cause food poisoning if they are eaten.

Of course, if you are really serious about food safety, make sure that the chicken is cooked in a proper way. Eating undercooked meat is another common cause of food poisoning. Bacteria can be killed by the heat of above 70℃. This is the best way to get the bacteria present on raw meat destroyed.

In conclusion, food safety is important but that doesn’t mean that you have to wash raw meat with running water, which carries a lot of health risks.

高二英语其他题困难题查看答案及解析

How did it 　　　　 that you made such a silly mistake?

A. bring about　　 B. come about

C. come across　　 D. come on

高二英语单项填空中等难度题查看答案及解析

How did it 　　　　 that you made such a silly mistake?

A. bring about　　 B. come about

C. come across　　 D. come on

高二英语单项填空中等难度题查看答案及解析

Would you like to _______with us to the film tonight?

A. come a long　　　　 B. come off　　　　 C. come across　　　　　 D. come through

高二英语单项填空简单题查看答案及解析

--- Steven, where did you come across the famous novelist from England?

--- Believe it or not, it was in the supermarket ________ we went shopping last Sunday.

A. which   B. that       C. there             D. where

高二英语单项填空困难题查看答案及解析

When we look at the sky and see a bright light moving quickly across it or coming towards the earth, we talk about seeing a “shooting star” or a “falling star”. These moving lights are not, in fact, stars at all. They are small pieces of matter from outer space, which burn up as they enter the Earth’s atmosphere. The correct name of them is meteoroids. Any pieces that make it to the Earth’s surface without completely burning up are known as meteorites. A meteor is actually the name given to the light we see when a meteoroid is burning up.

When a meteorite hits the Earth at speeds between 11 and 72 kilometers a second, it can do amazing damage. A very large meteorite could knock the earth out of its orbit. If this happened, all life on Earth would probably become extinct（灭绝）. The path we follow around the Sun would change and as a result the Earth would become either much hotter or much colder. This change in temperature would affect sea levels and the amount of water in rivers. There would either be huge floods, which would cover most of the land with water, or the oceans would dry up and there would be a drought, which means a long period of time without rain. Either way, nothing could survive. If a large meteorite landed in the sea it would almost certainly cause tsunamis, which would race towards the land, destroying everything in their paths.

Although it is unlikely the Earth will be struck by a meteorite large enough to do that kind of damage, there is evidence of fairly large meteorites hitting the Earth in the past. In 1908 a large area of forest in Tunguska, Siberia was destroyed by a meteorite that came apart just before it hit the ground. The moon, however, has about three billion craters陨石坑caused by meteorites impacting影响 its surface. The reason more meteorites have reached the surface of the moon than the surface of the Earth is that the moon does not have enough atmosphere for the meteorites to burn up in. some of the meteorites that have reached the Earth’s surface have done considerable damage. Some scientists believe it was a change of climate caused by meteorites hitting the Earth that resulted in the extinction of the dinosaurs and other large prehistoric animals.

Scientists are especially interested in meteorites because they contain information about the solar system. It is widely believed by scientists that most meteorites are produced by collisions（碰撞） between asteroids (small planets). These collisions probably happened many billions of years ago. This means the physical and chemical structure of a meteorite can give scientists information about the early days of the universe.

1.The story is about ___.

2.The Earth has ___.

3.Some scientists believe the dinosaurs became extinct because ___.

4.Meteors are ___.

高二英语阅读理解困难题查看答案及解析

—Where did you come across your old classmate Jane?

—It was in the supermarket ________ she worked ________ I came across her.

A. where; when        B. that; when        C. that; that        D. where; that

高二英语单项填空中等难度题查看答案及解析