Look closely at your hands. Are they clean? It doesn't matter how many times you wash your hands, tiny microbes (微生物) still stay on them. But don't worry. Most microbes don't harm you.

Now scientists say the microbes on our hands could be used in a surprising way; fighting crime, According to a recent survey microbes as well as fingerprints(指紋) could be used to indentify the criminal.

Everyone has his own set of microbes on the hands. That is to say, if you and your best friend were able to see and compare all the microbes on your hands, your hands probably would look different. Some microbes only show up on your hands while others live only on your friend's hands.

When you work on a computer you leave the microbes from your hands on the keyboard. The scientists can easily tell the owner of the keyboard by looking at the microbes on it. Even if you don't leave your fingerprints behind, your microbes may give you away.

Noah Fierer, a scientist, says. "You can only clean a fingerprint, but you can't sterilize (使無菌) a surface just by wiping(擦) it off," He says that scientists have a lot more work to do before the microbe is used as a useful tool.

1.According to the passage,_______ could be used to identify the criminal.

A. fingerprints    B. scientists' hands

C. microbes        D. fingerprints and microbes on people's hands

2.Paragraph 3 tells us that________.

A. our hands look similar             B. the microbes will make the keyboard dirty.

C. we should compare hands often     D. we have our own sets of microbes.

3.When you work on computer, the microbes________.

A. just stay on our hands B. also stay on the keyboard

C. will do harm to you D. will disappear

4.From Noah Fierer we know that________.

A. fingerprints are no longer useful in fighting crime

B. microbes can be found on everyone's hands.

C. unlike microbe fingerprints can be cleaned if people wipe them

D. the microbe is used as a useful tool

5.What’s the best title of the passage?

A. Microbes May Tell Who You Are               B. Scientists Say Everyone Has Microbes

C. Noah Fiercer Does Research Into Microbes    D. Fingerprints Help Catch Criminals

 

Look closely at your hands. Are they clean? It doesn't matter how many times you wash your hands, tiny microbes (微生物) still stay on them. But don't worry. Most microbes don't harm you.

Now scientists say the microbes on our hands could be used in a surprising way; fighting crime, According to a recent survey microbes as well as fingerprints(指紋) could be used to indentify the criminal.

Everyone has his own set of microbes on the hands. That is to say, if you and your best friend were able to see and compare all the microbes on your hands, your hands probably would look different. Some microbes only show up on your hands while others live only on your friend's hands.

When you work on a computer you leave the microbes from your hands on the keyboard. The scientists can easily tell the owner of the keyboard by looking at the microbes on it. Even if you don't leave your fingerprints behind, your microbes may give you away.

Noah Fierer, a scientist, says. "You can only clean a fingerprint, but you can't sterilize (使無菌) a surface just by wiping(擦) it off," He says that scientists have a lot more work to do before the microbe is used as a useful tool.

1.According to the passage,_______ could be used to identify the criminal.

A. fingerprints    B. scientists' hands

C. microbes        D. fingerprints and microbes on people's hands

2.Paragraph 3 tells us that________.

A. our hands look similar             B. the microbes will make the keyboard dirty.

C. we should compare hands often     D. we have our own sets of microbes.

3.When you work on computer, the microbes________.

A. just stay on our hands B. also stay on the keyboard

C. will do harm to you D. will disappear

4.From Noah Fierer we know that________.

A. fingerprints are no longer useful in fighting crime

B. microbes can be found on everyone's hands.

C. unlike microbe fingerprints can be cleaned if people wipe them

D. the microbe is used as a useful tool

5.What’s the best title of the passage?

A. Microbes May Tell Who You Are               B. Scientists Say Everyone Has Microbes

C. Noah Fiercer Does Research Into Microbes    D. Fingerprints Help Catch Criminals

 

Even though global warming may have made the weather more mild, many animals are still hibernating（冬眠）. It’s too bad that humans can’t hibernate. In fact we almost did.
Apparently, at times in the past, farmers in France liked a semi-state of human hibernation. So writes Graham Robb, a British scholar who has studied the sleeping habits of the French farmers. As soon as the weather turned cold, people all over the France shut themselves away and practiced the forgotten art of doing nothing at all for months.
In line with this, Jeff Warren, a producer at CBC Radio’s The Current, tells us that the way we sleep has changed since the invention of lighting.
When historians began studying texts of the Middle Ages, they noticed something referred to as “first sleep”, which was not clarified, though. Now scientists are telling us our ancestors most likely slept in separate periods. The business of eight hours’ continuous sleep is a modern invention.
In the past, without the artificial light, humans went to sleep when it became dark and then woke themselves up around midnight. The late night period was known as “The Watch”. It was when people actually kept watch against wild animals, although many of them simply moved around or visited family and neighbors.
According to some sleep researchers, a short of insomnia（失眠）at midnight is not a disorder. It is normal. Humans can experience another state of consciousness（清醒狀態(tài)）around their sleeping, which happens in the brief period before we fall asleep or wake ourselves in the morning. This period can be a creative time for some people.
Playing with your sleep rhythms（節(jié)奏）can be dangerous, as worry may set in. Medical science doesn’t help much in this case. It offers us medicines for a full night’s continuous sleep, which sounds natural; however, according to Warren’s theory, it is really the opposite of what we need.
【小題1】The late night was called “The Watch” because it was a time for people ______.

A．to set time to catch animals

B．to remind others of the time

C．to guard against possible dangers

D．to wake up their family and neighbors

【小題2】We can infer from the last paragraph that people should ______.

A．sleep in the way animals do

B．follow their natural sleep rhythms

C．keep to the eight-hour sleeping way

D．a(chǎn)sk doctors for help if they can’t sleep

【小題3】What is the writer’s purpose in writing the passage?

A．To throw new light on human sleep.

B．To encourage people to sleep less.

C．To give some suggestions on insomnia.

D．To find out people’s hibernating history.

You may get a cold sometimes. It often starts with a sore throat. You sneeze (打噴嚏) and your nose runs. You usually have a headache, too. Often you have a cough later. It’s not a serious illness, but you may feel quite bad.
 There isn’t a cure (治愈方法) for the cold, but you can take some medicine to make you feel better. For example, you can take aspirin (阿司匹林) to get rid of (擺脫) your headache. It is good to rest and drink a lot of water, too. A doctor once told me, “With the right medicine, the cold will last for seven days. With no medicine, it will go on for a week!”
Where does our medicine come from? A long time ago, people knew that some plants made them feel better. For example, the juice of lemons (檸檬) makes a sore throat better. Now, scientists find some parts of plants can make some medicine. Because of these medicines, people now live longer than their grandparents.
【小題1】If you catch a cold, you may have _______ at first.

A．a(chǎn) sore throat	B．a(chǎn) headache
C．a(chǎn) cough	D．a(chǎn) stomachache

【小題2】What should we do when we catch a cold?

A．We should take some medicine.

B．We should have a good rest.

C．We should stay at home and drink a lot of water.

D．All of the above.

【小題3】What can make a sore throat better?

A．Some plants.	B．The juice of lemons.
C．Aspirin.	D．Fruit.

【小題4】What does the underlined sentence mean?

A．You shouldn’t take any medicine if you have a cold.

B．There is almost no medicine that can cure the cold.

C．You’ll feel better if you take some medicine.

D．There is some medicine that can cure the cold.

【小題5】Which of the following sentences is TRUE?

A．Taking aspirin can get rid of the cold.

B．All the plants can be made into medicine.

C．Scientists have found a cure for cold.

D．Some parts of plants may make people feel better.

Robots seem very new to most people. But they have a __51__ history. A Greek scientist made the first robot. You may  52  robots in some movies. The robots in the movies are usually stronger, faster and __53__ than people. In real life, most robots are used in factories. They can do lots of dangerous, difficult or__54__ jobs. Some people can’t look __55_ themselves and robots can help them. For example, some people can’t see, and they use a guide dog to help themselves move. But now scientists are__56__ a robot to help them.

Robots are also used in American hospitals. At one hospital, a robot   57  meals from the kitchen to the sick people’s rooms. It never loses (迷失)its __58__ because it has a map of the hospital in its computer system(系統(tǒng)).__59__ the future, robots will even work in space. But robots will  60  take the place of(代替)people but only work for people. They can, however, help us in a lot of different ways.

1.                A．unpleasant      B．long           C．strange   D．interesting

 

2.                A．look           B．look at          C．see  D．know

 

3.                A．clever          B．cleverer        C．cleverest D．the cleverest

 

4.                A．interesting      B．interested       C．boring    D．bored

 

5.                A．a(chǎn)bout          B．a(chǎn)t             C．for  D．a(chǎn)fter

 

6.                A．taking          B．using           C．making   D．predicting

 

7.                A．flies           B．cooks          C．makes    D．takes

 

8.                A．way           B．road           C．street    D．meal

 

9.                A．For            B．Of             C．With D．In

 

10.               A．ever           B．never          C．still   D．yet