综合填空。用方框中所给的单词的正确形式填空，使短文正确通顺，每词限用一次（每小题1分，共10分）

Of all the things we eat and drink, water is the most__1.____. Not many people understand this, but it is quite true. The man’s body can go__2.____ food for a long time, but two or three days without water usually makes people___3._____.

Many people don’t understand how much water the man’s body __4._____ and they don’t drink enough, especially (特别) in ___5.____ weather. Most people drink when they feel thirsty. They often need more water especially ___6._____ they have sports.

____7.__ we don’t have enough water, we may feel ___8.____ and may ___9.____ ill. Now you can see__10._____ important the water is.

补全短文。根据短文内容，从短文后的A～F 选项中选出适当的选项补全短文，并将选项的编号依次填入下面的表格内，其中有一项是多余的。（共5小题，每小题1分；计5分）

How do you remember the way to your house? Where do dreams come from? _____1_____ A British scientist showed that “sleep can improve one’s memory.” _____2_________ In fact, your brain is working day and night. If you learn words before bed, a certain part of the brain may help you to remember the words while you sleep. ______3________ It might make a person more talented.

There was more interesting things about the brain. ______4_________ Just two bananas can give the brain enough energy to work for a whole day. According to some scientists, yawning(打哈欠) keeps our brains “cool”, which makes us think quicker.

_______5____________

① Eat healthy foods.

② Get a lot of playtime or exercise.

③Don’t drink or smoke.

④Use your brain a lot.

A. Our brains only work in the daytime.

B. It’s not a dream for students to study when they sleep.

C. Your brain uses less energy than a fridge light’

D. What’s more, another scientist in the USA found that there was a “talent button”in the human brain.

E. Here are some pieces of advice to keep a good brain.

F. It’s your brain that does these things.

综合填空。用方框中所给的单词的正确形式填空，使短文正确通顺，每词限用一次（每小题1分，共10分）

   Of all the things people eat and drink, water is the most important. Not many of us understand this, but it is quite true. The human body can go without food for a long time, but two or three days without water usually make people dead.

 Many people don’t understand how much water the human body needs to work well and many people do not drink enough, especially(尤其) in hot weather. Most people drink when they are thirsty(口渴), but they often need more water especially when they take exercise.

  A man’s body has 65 to 75 percent water. If we do not drink enough water. We feel tired and may become ill.

根据短文内容完成下列句子，每空一词。（5分）

76. Not _________ knows the most important drink is _________ .

77. We can only live 2 or 3 days _________ water but we can live longer if we don’t have any _________.

78. _________ people drink water only when they are _________.

79. We need _________ water when we do _________.

80. If we don’t drink _________ water, we may feel  _________ and become ill.