阅读下面短文，在空白处填入适当的单词或括号内单词的正确形式。Historians have...

阅读下面短文，在空白处填入适当的单词或括号内单词的正确形式。

Historians have said that we have always had a sweet tooth. Our sweet tooth has grown over the years and people are now more attached1.sweets than ever before.

Tim Richardson,2. famous historian, has created a timeline to show our love of sweets. He said, “A sweet thing3. (enjoy) during the day can be a source of simple comfort and pleasure cheering us up. People have known this for4. (century). Throughout history, many sweets have kept their charm and 5. (popular) because they have kept up with the6. (late) taste trends.” Cave paintings have been found of our ancestors attacking beehives(蜂窝)7.(find) honey.

A fun fact is that honeycomb(蜂巢)was the8.(one) sweet that ancient people ate. As the years went on, Lollipops and chewing gums appeared. Chewing gum has a history that9.(date) back to the times of Greece. It was not until 192810.Walt Diemer made the very first bubble gum.

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As teenagers, we do have some troubles when growing up, but we can get rid 1. them correctly and wisely. First, some of us are upset 2. their body images and looks. It’s unnecessary and it’s not important at all. We needn’t care about it. It is one’s inner beauty 3. matters. Second, we sometimes seem to be 4. (understand) by our teachers, parents and classmates. 5. (face) with this, we can find 6. proper time to have a heart-to-heart talk with them, 7. (try) to remove the misunderstanding. Some of us have fewer friends. I think being open-minded and friendly will do you good. Third, we may fall behind others, 8. makes us stressed. Actually we can encourage ourselves to work efficiently, full of 9. (determine). At last, some of us don’t have much pocket money, so they feel unhappy. Isn’t it strange? 10. long as we have done some, that’s enough. And we can learn how to spend money.

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New research suggests that our DNA 1. (help) us to decide whether we prefer coffee or tea. Researchers from a university in Australia studied how our genes affect our taste and why we like some tastes 2. (good) than others. Following the research, researchers believe they know why some of us prefer coffee while others like tea more. The researchers found that people who like more bitter tastes are more likely to drink coffee, The researchers said they found something strange in 3. (they) research, People who are more 4. (sense) to the bitter taste of caffeine are more likely to prefer coffee to tea.

Researchers looked at data on more than 400, 000 men and women in the United Kingdom. They also looked at an Australian study 5. compared the tastes of 1,757 twins with their siblings (兄弟姐妹). The researchers said genes weren’t the only factors (因素) 6. (affect) people’s tastes. Other things like our changing environment, social factors or 7. effects of taking medicine can also make us prefer coffee or tea, The researchers said we could learn to like coffee, Dr Liang-Dar Hwang said: “Bitter taste perception (直觉) 8. (shape) not only by genetics. but also environmental factors. Even though humans　 9. (natural) dislike bitterness, we can learn to enjoy bitter-tasting food after being exposed 10. environmental factors.”

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It seems that Chinese people have always loved to discuss 1. differences between northerners and southerners. Now, another difference has drawn wide attention: the way northerners and southerners shop 2. food at markets.

People from southern China normally buy 3. they need for just one or two meals at a time. It’s normal for them to buy just half a Chinese cabbage, two 4. (potato) and 25 grams of beef at a time. 5., a person may be laughed at if they do this in the north. Instead, buying enough vegetables and meat for a week 6. (be) normal.

The different could be because of the different climates. Food can 7. (keep) for a long time in the north, as it’s 8. (usual) cold and dry there. Many northerners have the habit of 9. (store) food for a long time. But due to the hot and wet weather in the south, southern Chinese people prefer 10. (buy) just enough food for one meal or one day. Otherwise, the food may go bad.

Maybe these debates about different customs help us to understand each other better.

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阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Have you ever noticed that you feel 1. (happy) and more relaxed after you eat bread，pasta or fruit? Do you find that you are more energetic and awake after eating yogurt or beans? These things are not accidents. Food 2.　 (affect) how we feel more than we think. Scientists researching 3. (it) effect on our moods are beginning to understand that we can influence our feelings with what we eat.

Although our moods relate 4. having various food，it is not quite as simple as choosing the food for the right occasions. If that 5.(be) the case，athletes would not eat a lot of carbohydrates before a race.

Another chemical 6.(connect) with our moods is caffeine, 7.is found in coffee, chocolate and many types of tea，and it is perhaps 8. worst thing you can have when you are feeling stressed.

Of course，enjoying a nice meal with friends，whatever we eat，can also impact our spirits. 9.(be) with friends and family plays a big part in experiencing happiness.

Most importantly，though，remember the following old rule：try to eat different food，10. not too much.

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It is possible that we simply do not stay in one place for a true friendship 1. (develop). However, there can be no disagreement on 2. need for each of us to think carefully about the kind of friendships we want.

To most of us, friendships 3. (consider) important, but we need to have clear minds of the kinds of friendships we want. Are they to be close or kept at arm’s 4. (long)? Do we want to share something with our friends or do we want to walk on the surface? For some people, many friendships on the surface are quite enough　 5.that’s all right. But at some point, we need to make sure that our expectations are the same　 6.our friends’ expectations. If one 7. (want) more from the friendship than the other, and if this is not talked about, one is likely at last to feel that he’s holding the short end of the stick. The sharing of 8.(person) experience including our tears as well as our dark 9. (dream) is the surest way to deepen friendships. But it must be undertaken　 10. (slow) and carried on only if there are signs of interest and action in return.

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We all know that fish live in the water. But there is a kind of fish living in the desert. This kind of fish is called the lungfish. The lungfish is a type of fresh water fish best known for its 1. （able）to live on land, without water, for months on end, and sometimes even for years.

As its name suggests, the lungfish has a highly evolved breathing system 2. can take oxygen straight from the air, just like land animals do. While they still live in the water, the lungfish needs to 3. （regular）come up to the surface for air. And 4. is astonishing is that these fish can even die if they are in the water for a long time. Therefore, they need to avoid 5. （put）underwater.

When in the water, the lungfish behaves like other 6. （type）of fish, swimming and eating small fish at 7. bottom of ponds and lakes. But when the dry season hits, the lungfish will bury itself deep into the mud, where it secrets mucus（分泌粘液）out of its skin that hardens to form a protective cocoon（茧）around it. Only the mouth　 8. （leave）for breathing.

Lungfish is one of the most ancient bony fish 9. （discover）on the earth today. They are very much like the fish that 10. （live）two hundred million years ago. And now lungfish is found only in Africa, South America and Australia.

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A Fearless Fighter

Brazilian businessman Carlos Ghosn once said: “Any job very well done has been carried out by a person who is fully devoted.” It's also the motto of Zhong Nanshan,1.Chinese respiratory (呼吸的) disease expert.

Zhong learned it from his father, 2. was a doctor and devoted his whole life to his medical career. With the aim of “leaving something useful for the world” Zhong's father wanted to sum up his decades of clinical (临床的) experience for 3.(late) generations even while he was 4.(suffer) from a serious eye disease, 5.(inspire) by his father, Zhong is also devoted to his career.

In 2003, SARS, a deadly respiratory disease,6.(spread) across China and later that ear became a 7.(globe) epidemic(流行病). Fearless of challenging the authorities Zhong bravely proposed that chlamydia might be one cause of death, but not the only cause of SASS, under his 8.(guide) not Zhong bravely proposed that long after that an effective treatment method was discovered. Due 9. his success, Guangdong province achieved the lowest death rate and highest recovery rate for SARS in China. In fact, Zhong not only challenged the authorities, but also death. During the SARS outbreak, he stood on the frontlines in the fight against the deadly disease, even though he knew man doctors and nurses 10. (die) after becoming infected with it before.

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Scientists said that slower walkers who are 1.their forties and fifties could get older 2.(quickly) than faster walkers. They could age both 3.(physical) and mentally. Doctors already knew that older people who walked slowly were more likely 4.(have) health problems. They wanted to find out if this was 5.same for younger people.

The researchers conducted a study. The participants had medical records of health checks throughout their lives. For some, these records went back to when they 6.(be) three years old. The researchers used data on the 7.(intelligent) of the participants. They looked at 8.quickly people could calculate things. They also did tests on the participants at 9.(differ) walking speeds. The participants were requested to say the alphabet while 10.(walk) at a normal speed and fast speed. They found that people who walked more slowly showed less brain activity when they were reciting the alphabet.

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Recently a new research has been reported. It said that many fathers of children experienced lots of injuries per year while playing with _1.______(they) children. Some fathers felt that it was the most dangerous thing of being a parent walking across the floor_2.____(cover) by toys. And some of them fell over because of clothes or other things that _3._____(throw) everywhere. Besides, a third of fathers were knocked down __4.____their young children when fighting with them and a quarter got hurt when playing football or climbing trees with them. In fact, young fathers one in five picked up an injury when doing something that wasn’t ___5.____(suit) for them.

The research also found that some of the fathers who were __6.___(serious) injured had to take time off work. __7.___, not all of them had medical insurances in place__8._____(prevent) the case that they were too ill to work. And they were more likely to face a situation____9.____ their mobile phones and holiday bookings declined sharply during illness. So the fathers took much __10.____(press) from both family and the work.

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