The earth is our home. We must take care of it. Life today is easier then it was years ago, but it has brought some new problems. One of the biggest problems is pollution. We can see it, smell it, drink it and even hear it.
Man has polluted the . The more people, the more pollution. Many years ago, the problem was not so serous because there were not so people. When the land was used up or the river was not clean in a place, man went to place. Now man is slowly polluting the whole world.
pollution is still the most serious, it’s bad for things in the world.
Many countries don’t let people burn for air in the houses and factories in the city. Pollution by SO2 is now the most dangerous kind of air pollution. It’s caused by heavy traffic. People say it’s to ride bikes. When you are riding, there is no pollution. But even in developed countries, most people don’t go to work by bike. It’s not because bikes are expensive or people are tired if they ride to work. It’s because the number of cars on the roads becomes larger. So more people their bikes and go to work by car, then things are getting worse and worse. We should have special roads only for bikes and make it difficult and expensive for divers to take their cars into the city that they will go back to use their bikes.
A．hundred B．hundreds of C．hundred of D．hundreds
A．moon B．star C．earth D．sun
A．lot B．little C．many D．much
A．others B．the others C．the other D．another
A．Air B．Food C．Water D．Noise
A．life B．live C．living D．lives
A．something bad B．bad something C．something good D．good something
A．least B．best C．most D．worst
A．put on B．look at C．put away D．look up
A．quite B．such C．very D．So
You have often __1__ people talk about work. Perhaps you have __2__ your friends about how hard you worked to get something done. However, you may have done no work __3_ you think you worked hard.
A boy is pushing a big box very hard, but the box is __4__ heavy for him to move and he may __5__ to push against the box. __6__ the language of science, he has not done __7__ work. Can you think you are working when you are studying or talking?
In science, work is only done when a force(力) moves something that has weight through a distance（距离）.
Work =" force" × distance moved.
__8_ you want to find out whether work is done, _9_ yourself, “Is a push or a pull moving something through a distance?” If your answer is __10_, then work is being done.
A．asked B．wanted C．listened D．heard
A．said B．told C．talked D．spoken
A．though B．so that C．while D．because
A．very B．so C．too D．such
A．be afraid B．be sure C．not like D．like
A．In B．With C．As D．For
A．a B．no C．some D．any
A．If B．After C．While D．As soon as
A．to ask B．just ask C．only think D．to think
A．“Right” B．“Good” C．“Well” D．“Yes”
My mother began to ask us to be on time when my twin brother and I were about five years old. She _1_ told us not to be late for the bus, not to be late for school, and so on. “ Don’t be late” became our family rule.
Mother_2 as a teacher when my twin brother and I started the first grade. Every school day morning, she called us to get up, and cooked _3_ breakfast. School started at 8:00 am, _4_ we arrived at the school before 7:30 am each school day morning.
When we were in high school, our_5_ once told my mother that we had been late for three times in one month. That made my mother so _6_ that she beat us. After that I was not late for anything.
I kept the _7_ of being on time for a long time. When I _8_ a teacher, we were asked to get to school at 8；00 am, but I always got there at 7；15 am. That gave me more time to do my job _9_ .
When you learned good habits from your _10_ , they will give you more than you can imagine.
A． never B． already C． always D． even
A．worked B． helped C． learned D． studied
A． her B． him C． us D． them
A．because B． but C． and D． so
A． teacher B． sister C． brother D． father
A． happy B． angry C． excited D． relaxed
A．trip B． time C． hope D． habit
A．caught B． got C． started D．became
A．worse B． worst C． better D．best
A．classmate B． family C． friend D． group
Ben Lambert, the famous French singer, 1a long vacation this summer! He thought about 2_ to Greece or Spain, but decided 3_Canada. “I always take 4_in Europe,” he said. “This time I want to do 5_ . I heard that Canada is beautiful, and I know there are many people there whospeak French.”
Ben is going to Canada’s Great Lakes. He is leaving the first week _6_June and staying 7 September. He plans to have a very 8_ vacation. “I’m taking walks, going fishing, and going bike riding. I’m 9 to spend time in the beautiful countryside. I love nature. I hope I can forget 10_problems! At night, I’m renting videos and sleeping a lot… A great vacation! I can’t wait!”
A．are taking B．takes C．is taking. D．took
A．to go B．went C．going D．go
A．on B．to C．with D．in
A．vacation B．an vacation C．vacations D．holiday
A．something different B．different something C．anything different D．different anything
A．at B．on C．in D．to
A．until B．on C．for D．in
A．relax B．relaxing C．relaxed D．relaxes
A．planning B．to plan C．plan D．planing
A．my all B．all my C．all I D．all
A rich man loved his little boy very much. He wanted 1 him happy all the time. So he gave him everything that he could buy with 2 . But the little boy was still 3 .Where he went, he always wore a frown(皱眉). And he always wished for something he did not have. The rich man didn’t know 4 to make his son happy.
One day, a magician(魔术师) came and said to him, “I can make your son happy and 5his frowns into smiles, but you must pay me a great price 6telling him the secret.”
“All right,” said the man, “No matter what you ask for, I 7 you.” The magician took the boy into a secret room. He wrote something on a piece of paper, and then gave it to the boy. There were some words on the paper, “Do one 8 thing for someone every day.” The boy followed the 9 and became one of the happiest boys.
I think only those who are always thinking about 10 can be truly happy.
A．keep B．get C．to make D．to do
A．money B．food C．time D．toys
A．relaxed B．unhappy C．angry D．worried
A．why B．how C．what D．who
A．turn B．come C．put D．look
A．on B．for C．at D．with
A．boring B．bad C．kind D．hard
A．advice B．medicine C．book D．umbrella
A．another B．the other C．other D．others
Miracles（奇迹）will happen if you don’t give up trying. Even if you have 1 for one hundred times, you may succeed when you try for the 10lst time.
When I was born, my doctor told my mother that there was something wrong with my 2 . They were too soft to be able to walk. Although the news was bad, my mother didn’t become 3 . She didn’t believe what the doctor said 4 started to look for other ways.
My mother kept looking for other doctors for me, and finally she 5 . The doctor and his team in the hospital did 6 they could to help me. They also asked my parents to teach me to do some 7 to help me walk. One day when my mother came to pick me 8 . I crawled(爬) towards her. She was so surprised and happy that she couldn’t believe 9 eyes. Crawling was not walking, but it was a good 10 . Day by day, I could walk by myself.
When I grew up, my mother11 told me these stories. She said that if I thought of what she said whenever I met12 , I could do anything successfully. I have been working hard and I have turned out to be a very 13 person.. I get best grades in school and I am a good dancer and swimmer. 14 my mother’s strong resolution, I live a happy life now. What the story tells us, as my mother always says, 15_: Never give up.
A．achieved B．failed C．suggested D．felt
A．legs B．hands C．arms D．eyes
A．patient B．confident C．frustrated D．mad
A．or B．and C．if D．because
A．forgot B．changed C．succeeded D．continued
A．nothing B．somewhere C．anywhere D．everything
A．time B．exercise C．medicine D．shopping
A．away B．from C．into D．up
A．her B．my C．his D．herself
A．advice B．end C．chance D．start
A．hardly B．never C．always D．nearly
A．dreams B．experiments C．jobs D．difficulties
A．excellent B．dangerous C．busy D．special
A．According to B．Instead of C．Thanks to D．Together with
A．reminds B．is C．asks D．remembers