（7）Unit 7 Know Our World八年级下册冀教版英语优选100题学校：_姓名：_班级：_考号：_一、单选题1Tom is very_. He has good manners.A.politeB.politely C.impolite D.rude2Victoria, hurry up!_ we cant arrive there on time.A.OrB.SoC.ButD.And3_ of the land in that district is covered with trees and grass.A.Fifth twoB.Two fifthC.Fifth secondD.Two fifths4They have been friends _ they first met.A. sinceB. whileC. beforeD. after5To make the environment much better, more trees_ next year. A.plantB.will plantC.are plantedD.will be planted6This book must be great. My sister_ it five times.A.readsB.has reavkC.is readingD.was reading7It is _ to say thank you very often, even to family members.A. politeB. rudeC. dangerousD. humorous8Put on the coat_ you will be much warmer.A.orB.butC.andD.as9Guess what! I broke the record of the 100-metre race._!A.Well doneB.Bad luckC.Come onD.Hurry up10My mother_ yesterday when I was not at home.A.rang up meB.put me upC.rang me upD.put up me二、阅读理解 Islands are always changing their shapes, and sometimes, you may see the change happening. As a volcano(火山) near the island erupts(爆发), it spew out(喷出)streams of red-hot lava(熔岩).When the lava reaches the water around the island, it cools and forms new rocks, and the island grows. Most changes are hard to see. Storms and winds usually carry dirt and sand from one side of the island to the other side. Sea waves wash away soil and rocks from one beach and take them to another. So, the island changes the shape slowly, a tiny bit at a time. However, people on some small islands are worried, because they think their islands are changing shapes too fast. They see waves rise higher and further onto shores than they used to, and storms and winds are growing stronger too. Whats worse, some places have been flooded. For example, in the Solomon Islands, a country made up of small islands in the Pacific Ocean, five islands have disappeared. Scientists believe that it is because of global warming. With more gas and coal burnt for cars and factories, people produce more greenhouse gas and make the Earth warmer. Then, more ice melts and more water flows into the ocean, and sea level rises. But there is hope. Scientists are looking for ways to stop sea level rising and clean ways to run cars and factories. We can also help by recycling, planting trees, driving less, and wasting less. By doing these things, we can save more islands from disappearing.11How does an island grow?A.The red-hot lava cools and forms new rocks.B.The volcano gets bigger and makes it grow.C.The sea waves bring soil and rocks to it.D.The sea level becomes lower.12What are the causes of the disappearence of islands?More volcano eruptions.Warmer climate.Higher sea level.More gas and coal being burned.A.B.C. D.13Which way can prevent the islands from disappearing?A.Making more land by lava.B.Running factories with green energy.C.Moving people on islands to other places.D.Burning more gas and coal.14What can we infer(推断) from the passage?A. The islands will get smaller and disappear someday.B.Keeping islands from disappearing is possible.C. Islands always change shapes, but now such changes are slow.D. Solomon Islands have disappeared from the world.15Whats the scientists attitude (态度) about disappearing islands according to the last paragraph?A.Hopeful.B.Negative.C.Doubtful.D.Careful.三、七选五16根据对话内容，从方框中AG七个选项中,选出五个能补全对话的最佳选项（有两项多余）。A: Hi, Peter, how long have you been in China?B:_ However, Im going back to Britain tomorrow. Ive seen many interesting things in China.A: _B: Oh, yes. I love it. But when I visited it last time, there were too many people. Ive also been to the Birds Nest.A: Wow, great! _B: Yes, I went to see the West Lake in Hangzhou. It is so beautiful.A: OK. Have you tried any Chinese food?B: Oh, yes. I love Chinese food.A: _B: My favourite is Beijing Duck. Its delicious.A: Thank you for your time! _B: Thank you.A.Whats your favourite Chinese dish?B.Where have you been?C.Ive been here for two weeks.D.Did you go anywhere outside Beijing?E.Have a safe trip home.F.I wish you will have a good time in China.G.Have you been to the Great Wall?四、写作题17日常生活中，我们在交流时，除了用口头语言以外，还会用一些肢体语言。肢体语言在人们的交流中十分重要。假如你是李伟，你的笔友Jack将要来中国学习汉语，请你根据下列提示用英语写一封电子邮件，告诉他中国人常用的一些肢体语言。80词左右，开头和结尾已给出，不计入总词数；提示：1.见面打招呼时点头并微笑。2.很少在公共场合拥抱或亲吻。3.好朋友见面通常短暂地握手。Dear Jack,Im glad that you are going to study Chinese in China._ _Ill tell you more when you come. And Im looking forward to seeing