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(指纹) 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 (使无菌) 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(指纹) 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 (使无菌) 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.
【小题1】According to the passage,_______ could be used to identify the criminal.

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

The elephant is the largest animal to walk on Earth. An elephant can carry a load of 1,200 pounds（磅）. They eat 300 pounds of food a day. An elephant baby can weigh 200 pounds at birth. Elephants can live up to 70 years.
Elephants can be trained to carry logs with their trunks（象鼻）, and have been used in the forestry industry in Asia for many years.
Elephants use their ears as a cooling system. Blood  flows through veins (静脉) in the ears and as the elephant flaps (拍击) his ears, the blood cools and flows through his body to cool off other parts.
There are two kinds of elephants: the African elephant and the Indian elephant. African elephants can be identified(识别) by the larger ears. The African elephant grows up to 10 feet tall and weighs as much as 12,000 pounds.
The Indian elephant grows up to 9 feet tall, and weighs up to 8,000 pounds. It’s easy to identify because of its smaller ears. Most circus (马戏团) elephants are Indian elephants. Another name for the Indian elephant is the Asian elephant.
阅读上面的材料，完成下列句子。(每空一词)
【小题1】Elephants can live up to _______ years.
【小题2】Elephants use their _______ as a cooling system.
【小题3】There are two kinds of elephants: the African elephant and the ______ elephant.
【小题4】The ________ of the African elephant is as much as 12,000 pounds.
【小题5】It’s not ________to identify the Indian elephant from its smaller ears.

Each of the following sentences has four underlined parts labeled A , B , C and D . Identify the part that is incorrect . （5分）

1. What wonderful the film is ! Shall we see it again ?

   A                    B        C          D     

2. ---How did you get to that farm ? ---By my mother’s red car .

      A      B      C                     D

3. He decided to returned home as soon as he finished school .

       A        B     C               D

4. ---What are you doing in this weekend ?

       A                  B

  --- I haven’t made up my mind . Tell me about your plan , please .

          C                                            D

5. They live in the restaurant for the night everyday .

   A       B                    C             D

Each of the following sentences has four underlined parts labeled A , B , C and D . Identify the part that is incorrect . （5分）

1. What wonderful the film is ! Shall we see it again ?

   A                    B        C          D     

2. ---How did you get to that farm ? ---By my mother’s red car .

      A      B      C                     D

3. He decided to returned home as soon as he finished school .

       A        B     C               D

4. ---What are you doing in this weekend ?

       A                  B

  --- I haven’t made up my mind . Tell me about your plan , please .

          C                                            D

5. They live in the restaurant for the night everyday .

   A       B                    C             D