He knows         little English that he has never been offered an       job.

A．such;exciting    B．so,exciting    C．so;excited    D．such;excited

You should feel content, as the design can’t be done any ______.

A. best               B. worst                C. better         D. worse

_____was known to them all is that Bob had broken his promise____he would give them a rise.

A. As; which            B. What; that          C. It; that                 D. It; which

It is natural that children are curious (好奇的) about the world around them. For example, they want to know how their hearts beat. They want to know why the ocean water tastes salty.

　　As children grow up, they become curious about different kinds of things. When they are babies, they are interested in the parts of their bodies and in the smiles of their mothers. They become interested in the physical world around them: the plants, the animals, the sky. Later, they become interested in the things that people have made: wheels, bicycles, cars. And when they are adults, their curiosity continues. Sometimes this curiosity leads to a career (生涯、职业) in science.

　　Scientists spend their lives trying to find out about the world. Those who work with the earth sciences study the earth, the oceans, and the skies. Other scientists who study living things work with the biological sciences. A third group of scientists study the physical sciences, e. g. physics, chemistry .

　　These scientists have already discovered a lot about our world. For example, they tell us why your heart beats fast when you run. They say that when you are quiet, your heart normally beats sixty-five or seventy-five times a minute. Your heart is a pump (泵) that pumps blood to all parts of the body. The blood carries oxygen and nutrition. When you run, your muscles work very hard and use the nutrition that the blood carries to them. The muscles need oxygen, too . So your brain sends a signal to the heart. The signal means that the muscles need more nutrition and oxygen. Then the heart beats fast and sends blood quickly to the muscles. It may beat 90 to 140 times a minute.

　　Of course, scientists cannot answer all of our questions. If we ask, “Why does the ocean water taste salty” scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks. Rain falls into cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask , “What happens to the salt in the ocean? The ocean does not get saltier every year.” Scientists are not sure about the answer to this question.

　　We know a lot about our world, but there are still many answers that we do not have, and we are curious.

According to the passage, which of the following statements is true?

　 A．People are curious in the same way.

　 B．People in different countries are interested in different things.

　 C．Men and women are curious about different things.

　 D．People of different ages are interested in different things

Scientists who work with the biological sciences study____.

    A．the earth , the oceans and the sky   B．man-made things

    C．plants and animals   D．ocean water

When you run, your muscles need ____.

A．more nutrition and oxygen    B．more signals   

C．more salt                  D．water

A rock cracks _____.

A．in wet regions       B．in dry regions

C．at very high or very low temperatures     D．when salty water falls in

People are always curious because ____.

A．they cannot explain many things  B．they know nothing about the world

C．they know little about the world  D．they want to be scientists

Everyone has got two personalities—the one that is shown to the world and the other that is secret and real. You don’t show your secret personality when you are awake because you can control your behavior, but when you are asleep, your sleeping position shows the real you. In a normal night, of course, people frequently change their positions. The important position is the one that you go to sleep in.

If you go to sleep on your back, you’re a very open person. You normally trust people and you are easily influenced by fashion or new ideas. You don’t like to displease people. So you never express your real feelings. You’re quite shy and you aren’t quite sure of yourself.

If you sleep on your stomach, you are a rather secretive person. You worry a lot and you’re always easily upset. You always stick to your own opinions or judgment, but you don’t raise your hope too much. You usually live for today not tomorrow. This means that you enjoy having a good time.

If you sleep curled up, you are probably a very nervous person. You have a low opinion of yourself and so you’re often defensive. You’re shy and you don’t normally like meeting people. You prefer to on your own. You’re easily hurt.

If you sleep on your side, you have usually got a well—balanced personality. You know your strengths and weakness. You’re usually careful. You believe in yourself. You sometimes feel anxious, but you don’t often get sad. You always say what you think even if it makes people rather angry.

According to the passage, a person, who is not willing to change his mind and hard to deal with, probably sleeps ___.

A. on his side      B. on his back    C. curled up  D. on his stomach

If a person prefers to sleep curled up rather than on his back, he may be well content to ____.

A. do things personally.  B. stay alone   C. keep things secret D. trust others easily

Which of the following people, in the author’s opinion, most likely have personalities  opposite to each other ?

A. The people sleeping on their stomach and those sleeping on his backs.

B. The people sleeping on their sides and those sleeping curled up.

C. The people sleeping on their backs and those sleeping on their sides.

D. The people sleeping curled up and those sleeping on their stomach.

What the author mainly intends to tell us is that _______.

A. one’s sleeping position has something to do with （与……联系）one’s character.

B. everyone has got both real and secret personalities.

C. the position in which one goes to sleep is the most important one.

D. when awake, one does not show one’s secret personality.

He was about to tell me the secret _______ someone patted him on the shoulder.

A. as           B. until          C. while          D. when

No driving after drinking is a rule that every driver _______ obey in our country.

A. will                 B. shall                C. may              D. can

"-How was the school' s sports meet?

??????We didn’ t plan it like that but it   very well.

A. tried out    B. went out C. worked out   D. carried out

The Mystery of the Flashing Fireflies

During summer nights fireflies flash in the darkness. They look like bright spots of light dancing on the breeze. Catching them in a jar for a few minutes can be fun. Fireflies are not really flies, though. They are winged beetles. Scientists are using these special beetles to learn more about our world.

The reason a firefly flashed its light is to find a mate. There are around two thousand species, or kinds, of fireflies. Fireflies mate only with their own species. Each kind of firefly has its own flash pattern. It is important that fireflies recognize this pattern. That way they can find bugs of their own kind. The male firefly flies around in the sky while the female firefly stays close to the ground.

For many years, how a firefly flashes its light was a mystery. Scientists now know that a firefly’s light is a cold light. It gives off all of its power as light. It does not produce heat. A normal light bulb gives off only ten percent of its power as light. The rest of the power is wasted as heat. That is why a light bulb that has been on for a while is very hot. The firefly’s light does not feel hot like a light bulb.

Scientists have also learned that fireflies have a small built-in lantern. This special lantern is located inside a firefly’s body. To create light, a gas flows through tiny tubes. This causes the firefly to light up. A firefly can also turn its light on and off quickly. This puzzled scientists. They learned that short bursts of this gas make the firefly glow. When the gas fades, the light goes out. This process happens very quickly.

Scientists know that what they learn from fireflies will be important. Medical studies using fireflies are helping scientists fight illnesses in human beings. They have made new medicines from the chemicals used by fireflies to make light. Fireflies have also helped with new discoveries. New flashlights and flares have been made based on fireflies. These new flashlights and flares produce a cold light like a firefly. This way all the power makes the light shine. This little bug may be a pleasure to watch, but it is also an important part of our lives.

Why did the author most likely include Paragraph 4?

A. To explain how fireflies make light.        B. To describe different kinds of fireflies.

C. To show how much power fireflies use.     D. To describe why fireflies make light.

Which of these is the best choice for a heading for Paragraph 5?

A. The Cool Light of Fireflies               B. Watching Fireflies Flash

C. Understanding the Patterns               D. Learning from Fireflies

According to the passage, a firefly’s light is different from a light bulb’s light because the firefly’s light _______.

A. shines brighter  B. does not fade   C. lasts longer  D. is not hot

A reader asks this question about the passage: “ How many different kinds of fireflies are there?” Which paragraph from the passage answers the question?

A. Paragraph 2   B. Paragraph 3     C. Paragraph 4   D. Paragraph 5

The author most likely wrote this passage in order to __.

A. tell why fireflies light up                B. give facts about fireflies

C. show how fireflies help doctors           D. compare a firefly to a light bulb

I have to admit: I don’t flush the toilet every time I go to the bathroom. In fact, I firmly believe “If it’s yellow, let it mellow; if it’s brown, flush it down.”

I’m sure a lot of it has to do with the fact that I work at home. Alone (well, except for the cats and dogs). All day. And I drink a lot of water, which makes for many trips to the bathroom.

Another thing I have to admit: I also try to use very little toilet paper. I wash my hands after, though. Every time. (So maybe the water I don’t use flushing makes up for the water used to wash my hands?)

Ironically, my husband, who only uses toilet paper when necessary, always flushes. But he doesn’t seem to mind that I don’t flush every time. Or, at least not enough to file for divorce yet.

 Posted by Juliet Farmer

 Jun 14, 2010 at 10:21 PM

Comments (2)                                                     

When I’m at home alone I do not flush every time I pee(小便).  My husband hates that, though, so when he’s home, I flush a little more often.  I grew up doing that because I had a family that lived with huge tanks and you have to do it that way because it’s easier on the system, so it doesn’t bother me.  I do flush when I’m out in public, at people’s houses that don’t have big tanks and when we have company!

CherBearCM, Jun 15, 2010 at 4:21 PM

Not always. But I have 4 children who are always hanging from the door knob（球形捏手） while I pee anyway. So I’m lucky I have time to wash my hands after. The average toilet uses 8 gallons of water per flush! Much less than what it takes to wash my hands after. (just saying)

luvbnmomnwife, Jun 15, 2010 at 4:32 PM

CherBearCM doesn’t flush the toilet every time she pees ______.

A. because she can’t afford so much water

B. because her husband doesn’t like that

C. when she is with her friends

D. when she is alone

luvbnmomnwife seems to enjoy ________.

A. washing hands after using the toilet

B. taking care of her four children

C. peeing with her kids watching

D. flushing the toilet after peeing

The text is taken from ________.

A. a newspaper           B. a website

C. a magazine            D. a handbook

Which of the following titles best suits the text?

A. Stop flushing your toilet!

B. Do you flush the toilet every time?

C. Don’t forget to flush the toilet after peeing!

D. Do you realize the importance of saving water?