题目
Part II Reading Comprchension 30%,2%×15)-|||-Direction: There are 3 passages in this part. Each passage is followed by some questions.For each of-|||-them there are four choices marked A.,B.,C.,and D..You should decide which ONE is the best answer.-|||-Then blacken the corresponding letter on the answer card with a pencll.-|||-Passage One-|||-Questions 21 to 25 are based on the following passage:-|||-Air is all around you.You cannot see it,smell it,or taste it,but you can feel the wind blow You-|||-can see the wind move waves on the water,clouds in the sky,and tree branches.Wind is moving air.-|||-Without air you could not breathe.There could be no living plants or animals. Because sound-|||-travel through air,without air there would be silence,the movement of invisible air can support a-|||-large heavy airplane.Air makes up a precious blanket of atmosphere wrapped around the earth-|||-Beyond this blanket lies airless space,men must carry their own air supplies to be able to live and-|||-work when they travel in spaceships through this airless spacc.-|||-Air is a mixture of gases and water vapor.The most important gases in the air are nitrogen and-|||-orygen.About 78 percent of the air is made up of nitrogen and about 21 percent of orygen.The-|||-remaining one percent is mostly argon (盆),plus very tiny amounts of some other gases.Almost all-|||-living things use the oxygen in air.Fire cannot buru without oxygen.-|||-21.You can feel the air when it __-|||-A.is still B.is around you-|||-C.moves D.keeps quiet-|||-22.You_ __ sound if there is no air.-|||-A.can hear B.can`t hear any-|||-C.can make D.are still able to hear-|||-23.All air around the earth is called __-|||-A.atmosphere B.blanket-|||-C.space D.air supplies-|||-24.Living things depend mostly on the __ air.-|||-A. uitrogen B.argon-|||-C.hydrogen D.oxygen-|||-说明:1.试题间不留答题空间,不得超出边框:-|||-2.,学生作答时,所有答案均按蹊号顺序写在答题纸上:-|||-算10 18页
题目解答
答案
解析
步骤 1：理解问题背景
- 问题涉及对空气、风、声音、氧气等概念的理解。
- 题目要求根据给定的段落回答问题，每个问题有四个选项，选择最佳答案。
步骤 2：分析每个问题
- 问题21：根据段落中提到的“you can feel the wind blow”，风是移动的空气，所以当空气移动时，你可以感觉到它。
- 问题22：根据段落中提到的“without air there would be silence”，没有空气就没有声音，所以没有空气时，你不能听到任何声音。
- 问题23：根据段落中提到的“Air makes up a precious blanket of atmosphere wrapped around the carth”，空气构成了地球周围的珍贵大气层，所以所有围绕地球的空气被称为大气层。
- 问题24：根据段落中提到的“Almost all living things use the oxygen in air”，几乎所有的生物都使用空气中的氧气，所以生物主要依赖于氧气。
步骤 3：选择正确答案
- 问题21：根据分析，正确答案是C。
- 问题22：根据分析，正确答案是B。
- 问题23：根据分析，正确答案是A。
- 问题24：根据分析，正确答案是D。
- 问题涉及对空气、风、声音、氧气等概念的理解。
- 题目要求根据给定的段落回答问题，每个问题有四个选项，选择最佳答案。
步骤 2：分析每个问题
- 问题21：根据段落中提到的“you can feel the wind blow”，风是移动的空气，所以当空气移动时，你可以感觉到它。
- 问题22：根据段落中提到的“without air there would be silence”，没有空气就没有声音，所以没有空气时，你不能听到任何声音。
- 问题23：根据段落中提到的“Air makes up a precious blanket of atmosphere wrapped around the carth”，空气构成了地球周围的珍贵大气层，所以所有围绕地球的空气被称为大气层。
- 问题24：根据段落中提到的“Almost all living things use the oxygen in air”，几乎所有的生物都使用空气中的氧气，所以生物主要依赖于氧气。
步骤 3：选择正确答案
- 问题21：根据分析，正确答案是C。
- 问题22：根据分析，正确答案是B。
- 问题23：根据分析，正确答案是A。
- 问题24：根据分析，正确答案是D。