资源描述
4、举例说明微生物对人类有益的方面是什么？
12、淡水在自来水厂中除了沉淀和过滤之外，还要加入药物进行灭菌处理，这样才能符合我们使用的标准。
3、月球是距离地球最近的星球直径大约是地球的1/4，质量大约是地球的1/80，月球体积大约是地球的1/49，月球引力大约是地球的1/6。
7、将铁钉的一部分浸入硫酸铜溶液中，有什么现象？过一会儿，取出铁钉，我们又观察到了什么现象？（P36）
14、大我数地区的自来水水源取自水库、湖泊或河流。自来水是主要的饮用水，饮用水源受到污染，会直接影响我们的身体健康。
4、举例说明微生物对人类有益的方面是什么？
20、对生活垃圾进行分类、分装，这是我们每个公民的义务。只要我们人人参与，养成良好的习惯，我们周围的环境一定会变得更加清洁和美丽。
答：可以，馒头中也含有淀粉，淀粉在咀嚼的过程中发生了变化，变得有甜味了。
5、铁生锈变成了铁锈，这是一种化学变化。水分和氧气是使铁生锈的原因。
答：如蚂蚁、蝗虫、蚕蛾、蚜虫、蟋蟀、蝉、蝴蝶、蜜蜂、七星瓢虫等。 2019 届八年级（下）半期测试
第二部分 基础知识运用 （共 30 小题；计 40 分）
六、选择填空（共 15 小题；计 20 分）
A.从各题的 A、B、C 三个选项中选出正确答案。（共 10 小题，每小题 1 分；计 10 分）
( )31. It’s unfair rule that my parents don’t allow me to shop with friends on weekends.
A. a B. the C. an ( )32. I don’t like to hang out rainy days. I don’t want to get wet.
A. at B. in C. on
( )33. _you are a student, you should listen to teachers and finish homework carefully.
A. Although B. Since C. Until
( )34. My teachers some of today’s homework because we have to prepare for tomorrow’s Volleyball Competition.
A. work out B. take out C. cut out
( )35. When children grow up, they have to live alone and learn to take care of .
A. themselves B. their C. they
( )36. Jim is so shy that he often feels to answer questions in class.
A. strong B. silent C. nervous ( )37. Junko Tabei is famous as a woman mountain in Japan.
A. terrorist B. member C. climber ( )38. It rained last night. I could hardly fall asleep.
A. recently B. heavily C. quickly
( )39. I the importance of having good habits after I had a talk with the best student in my class yesterday.
A. realized B. returned C. repaired
( )40. While the serious snow , I was playing the piano in the living room.
A. died down B. was dying down C. dies down
B.补全对话。根据对话内容，从方框中选出适当的选项补全对话。并将选项中的编号字母依 次填在答题卡的相应位置。（共 5 小题，每小题 2 分；计 10 分）
A: What’s the matter, Linda? You look worried.
B: I want to buy CDs of Taylor’s. 41 I only have five yuan. A: 42 They will lend money to you.
A. Where can I sell the school things?
B. Why not ask your parents for help?
C. But I don’t have enough money.
D. They don’t think a student needs such a thing.
E. But teachers won’t allow us to do so.
B: My parents won’t help me. 43
A: I have a good idea. You could sell some school things to save money.
B: Great! 44
A: At the school gate. We can sell them to other students after school.
B:Sounds good. 45
A: Don’t worry. Let’s think about other ways.
七、完形填空。通读下面两篇短文，根据短文内容，从 A、B、C 三个选项中选出可以填入 空白处的正确答案（共 15 小题，A 篇每小题 2 分，B 篇每小题 1 分；共计 20 分）
A
Once, a king loved music so much that he looked for the best instrument in the world. One day, a magic man 46 the king a harp(竖琴).
The king took it back to his palace, but when he played it, the harp sounded 47 . Many other people tried it. The result was the same. The king was so angry that he threw the harp out as 48 .
A poor little girl later found the harp. Although she didn’t know how to play it, she decided to have a try. She played and played, for the whole day, the months and years. The music she played was never beautiful, but each time it sounded a little 49 .
Then one day, the king was reading a book in his room while the girl was playing the harp. He called the girl to his palace. When he saw the girl playing the most beautiful sound with his old harp. The king 50 understood the harp could only be played well by someone who would continue learning and practicing.
( )46.A.controlled B. offered C. got
( )47.A.beautiful B. terrible C. clear
( )48.A.rubbish B. wood C. snack
( )49.A.better B. worse C. more
( )50.A.properly B. luckily C. suddenly
B
You and your family are planning a picnic for tomorrow. But you want to 51 the weather forecast(预报) first to see if there will
be rain or not. Your father turns on the television and the family listens to the 52 who makes the weather report.
“It will be partly cloudy tomorrow morning, 53 clearing by early afternoon. The high temperature tomorrow will be 25℃.”
Since there will be no rain, the whole family feels 54 . Without the weather forecast, you would not know this, and you would just have
to try your luck. But now you can plan your picnic 55 worrying if it will rain or not.
The man you can thank for this is Cleverland Abbe. His nickname is “Old Probabilities”. He gave 56 weather forecast in the United States. People could know what the weather was like every day.
Abbe began his weather report in 1869. They were based on weather 57 he drew. 58 their accuracy(精确性), the reports were popular.
The government became interested in Abbe’s weather reports. They made Abbe a meterorologist (someone who studies weather), and he 59 reporting weather forecasts three times a day. He was the 60 forecaster of the U.S. government. He is also known as the father of the weather forecast.
( )51.A.raise B. know C. organize
( )52.A.fireman B. postman C. weatherman
( )53.A.so B. but C. although
( )54.A.excited B. shocked C. stressed
( )55.A.without B. from C. against
( )56.A.fair B. polluted C. daily
( )57.A.maps B. situations C. space
( )58.A.Instead of B. Because of C. Make sure
( )59.A.began B. hated C. pushed
( )60.A.first B. last C. next
第三部分 阅读理解 （共 15 小题；计 30 分）
八、阅读下面对话，根据对话内容判断句子的正误。正确的写“A”，错误的写“B”。（共 5 小 题，每小题 2 分；计 10 分）
At the age of 16, Julia left school and worked at a restaurant. For many years, she was only
interested in making money. Then one day she had a serious car accident which changed her life. “The terrible car accident took me 10 months to recover(康复). During that time, I realized I
wanted to find a more meaningful reason for being here in this world,” said Julia.
As soon as she recovered, Julia gave up working at the restaurant and traveled to California. One day she found a big company wanted to cut down part of a forest. In the forest there were lots of redwood trees. One of the trees was more than 1,000 years old.
Then Julia learned a group called Our Earth was trying to save the redwood forest from the company. They decided to find someone to live in a redwood tree and hoped this would stop the company from cutting the trees down. Julia volunteered.
Julia lived in the tree for over two years without ever going down. It was cold and wet in a redwood tree. There were even very cold winters while Julia was in the tree.
Finally the company decided to protect(保护) the tree Julia lived in. They agreed never to cut
down the big redwood tree or the tree around it. When Julia put her feet on the earth, she began to cry. But she thought it was so meaningful that she continued to do other things to protect the environment.
( )61. Making money was the only thing Julia took an interest in when she worked at a restaurant.
( )62. After Julia recovered, she went to protect the environment at once.
( )63. Julia lived in the redwood tree to stop the company from cutting the trees down. ( )64. The life in the tree for Julia was comfortable and enjoyable.
( )65. Julia understood there were more meaningful things to do from her experiences.
九、阅读下面两篇短文，根据短文内容选择正确答案（。共 10 小题，每小题 2 分；计 20 分）
A
@Nobel Book Store!
To celebrate our 30th birthday, we are having a big sale!
Children’s
books
Textbook
25% off
Picture book
30% off
Story book
20% off
20% discount(折扣) on all adults’ books!
Amazing events in our birthday month:
Time & Place
25 April, 4 pm Fanta Center, 3F
26 April, 1 pm Retro Mall, 2F
28 April, 7 pm Winkle Mall, 1F
29 April, 8 pm Fanta
Center, 3F
Event
Speaker
Claire Tay,
Writer of the book Michael Hawes, English professor David Koh,
Director of the book store
Kate White, winner of many international awards
Introduction:
The School Diaries
Discussion:
How to improve through reading
Speech:
The most popular books of the year
Question & Answer:
Face to face with a famous writer
Spend over $50 and get a chance to win a $10 gift card.
Spend over $100 and get a chance to win prizes, from Nobel membership, e-dictionaries to concert tickets!
( )66. April is the birthday month of .
A. Nobel Book Store B. Fanta Center C. Winkle Mall ( )67. You can get the biggest discount on .
A. Children’s textbooks B. Children’s picture books C. Adults’ story books ( )68. will help you know more about the most popular books this year.
A. Claire Tay B. Michael Hawes C. David Koh ( )69. If you spend $65, you will get a chance to win .
A. an e-dictionary B. a $10 gift card C. a concert ticket ( )70. The main purpose of the advertisement is to .
A. celebrate Children’s Day B. let more book buyers come
C. introduce reading classes
B
People often think of the North Pole(北极) and the South Pole as similar frozen(冰冻的) wastelands. They are both places with very low temperature and few people live there. However, the North and South Pole are not much alike as people may imagine.
The North Pole has no land, only thick(厚的) ice. Temperatures hardly ever go above 0°C, at
which water turns into ice. Most of the time, it stays below zero. In winter temperature are usually as low as -34.4°C.
Although conditions were very poor, people tried for many centuries to reach the North Pole. About 100 years ago, two men, Robert Peary and Mathew Henson, were able to get to this environment full of trouble and difficulties. They reached the North Pole on March 8th, 1909. It was really a hard trip for them.
There are few things more dangerous than crossing the Arctic(北极圈) on foot. People who
stayed there may face many problems: very low temperature, sudden storms, and even hunger. Most of the area is uninhaibite d because few people can live in such a difficult place.
People might think that with such low temperature for most of the year, the ice would be thick and hard. However, this is not true in the Arctic. The movement of the sea water under the ice may
often cause many different changes on the surface(表面). Sometimes the ice breaks into two
opening lanes of water called “leads”. Anyone who falls into a lead can be frozen to death in a few minutes.
( )71. This passage is probably from .
A. a story book B. a science book C. a computer magazine ( )72. According to the passage, what happened about 100 years ago?
A. Two men succeeded in getting to the North Pole.
B. The environment in the North Pole suddenly went worse.
C. Temperature in the North Pole was usually higher than 0°C.
( )73. What does the underlined word “uninhabited” probably mean in Chinese?
A. 气候恶劣的 B. 困难重重的 C. 无人居住的
( )74. The reason for the ice to break into two opening lanes of water is that .
A. the temperature suddenly drop B. the surface is filled with ice
C. the sea water under the ice moves
( )75. What does this passage mainly talk about?
A. A difficult trip to the North Pole. B. An introduction to the North Pole.
C. The differences between the North Pole and the South Pole.
B 卷 （共 50 分）
一、根据句意和首字母补全句子，并在答题卡上写出完整的单词。（共 5 小题，每小题 1 分；
计 5 分）
1．I think people can live longer and be healthier with the d of science.
2. I really want to buy a new phone because my phone is c broken.
3. As teenagers, we should learn to care for the d who are deaf or blind.
4. Jimmy didn’t like doing chores, but he s the floor and took out the rubbish yesterday.
5. I couldn’t believe Peter c others’ homework yesterday morning.
二、完成对话。在对话空格中填上适当的单词，使对话完整正确。一空一词（含缩写词）。
（共 10 小题，每小题 1 分；计 10 分）
A: What were you doing at 8:00 last night, Peter? I called you but you didn’t pick up.
B: I was busy preparing for the mid-term exam. You can’t imagine how 1 I am. Most of my classmates are hard-working and clever. I don’t want to fall behind.
A: It sounds terrible. You should plan your time well in order to get a good rest and good grades. Do you parents 2 you hard?
B: Yes, whenever they see my grades, they never show a feeling of 3 .They think I can be better if I study harder and do more exercises. I once made a 4 to try my best to become the best student in my class. But I gave up finally because I felt too tired.
A: Are your parents more disappointed （失望的）after that?
B: Yes, especially after 5 me with other hard-working students.
A: I think you should spend more time communicating with your parents. Then they can understand you better. Anyway, you are only a kid. You should enjoy your childhood.
B: Yes, luckily, our school not only takes students’ grades seriously, but also 6 lots of chances for us to develop our abilities, such as the Art Festival.
A: What did you do in the Art Festival this year?
B: I took part in the drama (戏剧) competition. It was the first time for students in Yucai to act classical dramas. But my parents thought I 7 too much time training, because I didn’t have enough time to study. We even had 8 when my scores of math test dropped.
A: But I think joining in activities is also good for your 9 . Life is not just about grades.
How was your performance?
B: We won at last although we 10 with other 13 strong classes. And my parents understood me finally and they were proud of me.
三、短文填空。 从下面方框中选出 10 个单词并使用其正确形式填入短文空格内，使短文 意思正确、通顺（每词限用一次）。 （共 10 小题，每小题 1 分；计 10 分）
cheer,
recent,
continue,
shock,
difficulty,
somebody,
explain,
strange,
neighborhood,
wait,
realize,
wonder
It was raining. I went to a café and asked for a coffee. While I 1 , I found that there were
many people in the place. But I felt lonely. Although I saw their bodies, I couldn’t feel their souls(灵魂) because their souls are all on the Internet. Only breathing and f inger movements were
the sign that they were still alive.
I stood up and walked between the tables. Suddenly, I found one of my 2 in a corner. I saw him sitting in front of a computer. I was so excited that I walked to him and said “Hello, Steve.”
“Hi,” he finally answered after I said several times. “Did I know you? I can’t talk with you. I’m busy,” he said. I was really 3 . I know he was chatting online and at the same time, he was playing a computer game----a war game. But 4 we talked happily when we were walking our dogs together.
Why didn’t Steve want to talk with me? I tried again to speak to him, but no word came out of his mouth. I wanted to give him my 5 . I touched his shoulder, still no replies. I had to put my hand in front of the screen. This time, 6 his game, he shouted loudly, “Leave me alone!”
I took a few steps back and 7 if the others were looking at me. I looked around, and I didn’t see 8 show any interest. At that moment, I had a sudden 9 that the people there were having a nice conversation with their machines, not with people. It was 10 for them to communicate with people face to face than throwing themselves into the world of computers. I couldn’
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