[基础巩固]单句语法填空1．The cooling wind swept through our bedroom windows，making(make)air conditioning unnecessary.2．As is known to us all，not all the people are willing to vote for the people who are eager to be the winners in competitions.3．He spent four years getting a degree，only to_find(find)there were no jobs for graduates.4．There is no convincing explanation(explain)of the overall structure of the universe.5．Apart from an occasional(occasion)noise from the elephant's stomach，the forest was silent.6．According to my own understanding，a good teacher is also a good performer (perform)in class.7．Local residents have reacted angrily to the news.8．To my great entertainment(entertain)，he promised to entertain us to ice cream.9．We are particularly(particular)grateful to him for his timely help.10．We finally managed to make the customers convinced(convince)of the quality of the vehicle.[能力提升]Ⅰ.阅读理解It is natural that children are curious about the world around them.For example，they want to know how their hearts beat (跳)．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 ter，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 sky.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 normallybeats 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(肌肉)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 (破裂)．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.[语篇导读]本文是一篇关于好奇心的议论文。
不同年龄段的人好奇心也不同，科学家们不能解释的事物就是好奇心的根源所在。
1．Scientists who work with the biological sciences study________ .A．the earth，the oceans and the skyB．man-made thingsC．plants and animalsD．ocean water解析：C[推理判断题。
由第三段第三句“Other scientists who study living things work with the biological sciences”可知生物科学家研究动植物，故答案为C项。
] 2．When you run，your muscles need ________ .A．more nutrition and oxygenB．more signalsC．more saltD．water解析：A[细节理解题。
由第三段中“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”可知答案为A项。
]3．A rock cracks ________ .A．in wet regionsB．in dry regionsC．at very high or very low temperaturesD．when salty water falls in解析：C[细节理解题。
由倒数第二段中“When a rock gets very hot or very cold，it cracks(破裂)可知答案为C项。
]4．People are always curious because ________ .A．they cannot explain many thingsB．they know nothing about the worldC．they know little about the worldD．they want to be scientists解析：A[细节理解题。
由最后一句“We know a lot about our world，but there are still many answers that we do not have，and we are curious.”可知答案为A项。
] Ⅱ.完形填空While traveling，you might have stayed at a hotel or a family member's house.But have you ever thought about staying in a stranger's__1__？This might sound__2__，but it's actually a trend that's becoming popular around the world，including China.Lodging rental (借宿出租)companies like Airbnb are helping people look for cheap ways to __3__.This website allows people to rent out their__4__ rooms or apartments as an alternative to __5__in over 190 countries.Created by young American men Brian Chesky，Joe Gebbia and Nathan Blecharczyk，Airbnb is a good example of a __6__economy.Through the Internet，people share__7__such as cars，apartments and __8__their expertise.__9__post information about the location，prices，descriptions and pictures.Guests can go to the __10__and find their favorite places to ers__11__their opinions on their stay so that people know whether a place is good or not.A man in New York named Jonathan Powley even rents out his __12__for $22(140 yuan)per night through Airbnb.This is no __13__car，Powley took out the car seats and changed the __14__to make it look more welcoming.He keeps it clean and puts flowers in it every day.He provides snacks and tells travelers where they can go and shower.But Airbnb does have some __15__.Sometimes you end up living with a stranger or it is not as __16__as it looked like online.__17__，hosts sometimes get mad when they get home and it's a complete__18__.In China，Airbnb operates in five__19__including Beijing and Shanghai.The country has seen a major __20__in Airbnb users in the past year.[语篇导读]本文介绍了爱彼迎这一个民宿出租网站的相关信息，包括其运营方式以及存在的问题等。