Unit 4 Amazing Science Topic 1仁爱版九年级上册课时优化训练（含解析）

Unit 4 Amazing Science 1. When was it invented —九年级英语仁爱版上册课时优化训练
一、单选题
1.After three spirits visited Scrooge, the old man _________ realize the importance of living with a grateful heart.
A.made to B.was made to C.was made D.made
2.—What’s the ________ of your great success
—Believe in yourself and stick to what you’re doing.
A.problem B.pleasure C.method D.chance
3.Scientists found that dogs may know human's feelings by ________ our breath and sweat (汗).
A. tasting B. smelling C. touching D. watching
4.Not only Lin Tao but also Wang Hai ______ by the teacher. They did very well in English exam.
A. praised B. are praised C. is praised D. was praised
5.No one knows what life will be like in the future, but you can use your ________ to make a picture in your mind.
A.knowledge B.invention C.courage D.imagination
6.We can overcome any difficulties _____ we believe in ourselves.
A. as well as B. as far as C. as long as D. as often as
7.—How did ancient people find out where they were
—Stars _____ the guiding marks.
A. are used by B. were used as C. used as D. were used by
8.—How do you ______ the idea of your invention
—When I saw a boy play on the seesaw(跷跷板), the idea occur to me.
A. come about B. come to C. come out D. come up
9.—Why didn't you play basketball with us yesterday afternoon
—Because I _____. I had to look after my little sister.
A. didn't allow to come out B. don't allow to come out
C. wasn't allowed to come out D. am not allowed coming out
10.It is said that the _____ was _____ by that _____ many years ago.
A. invention; inventor; inventing
B. inventor; invention; invented
C. invention; invented; inventor
D. inventing; invented; invention
二、阅读理解
Because of a lack of trained lifeguards to watch over swimming pools, a team of scientists from Germany has developed an underwater robot to help lifeguards in rescuing (救援) swimmers in emergencies.
According to scientists, there are some typical postures that you can use to recognize when someone is in danger. The robot has been tested in a variety of settings including indoor pools and open water. If swimmers’ movements are consistent with drowning (溺亡), the information of the drowning person will be sent out, which is stored in a docking station on the pool floor, and it will be released by a signal from the monitoring cameras. Once the robot receives the signal and reaches its destination, it will carry the endangered person to the surface. What’s more, the robot is designed with a set of moving parts to keep the lifeless person from sliding down as the robot surfaces.
When the robot is tested at lakes and other outdoor settings, drones (无人机) took on the task of the monitoring cameras. For rescues in swimming lakes where the visibility is limited, the underwater vehicle must be equipped with acoustic sensors (声音传感器). Sound wave echoes can be used to determine people’s positions so precisely that the robot can autonomously head for the target person and pick them up. When the robot is informed of an emergency (紧急情况), a signal will warn the team immediately.
“The current system is 90 centimeters long, 50 centimeters high, and 50 centimeters wide and looks like an underwater submersible that might be used for exploring ship wrecks. The central innovation (创新) of the system is the side folding wings that fix lifeless people on a stretcher without injuring them. To bring them to the surface of the water, balloons are filled with a total of 15 to 20 kilos of buoyancy (浮力).
The research team are still doing research on the robot, aiming to make future versions smaller, lighter and less expensive. At present, a patent has already been filed for the aquatic robot. In modified versions, it can take on further tasks—such as offshore and dam wall(坝墙) inspections or being used to monitor the health of fish in fish farms.
11.Why did German scientists invent an underwater robot
A.To help lifeguards to rescue.
B.To prevent swimmers practicing.
C.To check if there are emergencies.
D.To watch over the swimming pools.
12.The expression “be released” in Paragraph 2 probably means “______”.
A.be sent out B.be controlled C.be taken up D.be delivered
13.Which of the following would be the best title for the passage
A.A Robot to Build Dam Walls B.A Robot to Prevent Drowning
C.A Robot to Protect Lifeguards D.A Robot to Improve Swimmers’ Skills
答案以及解析
一、单选题
1.答案：B
解析：此比题考查make sb. do sth.的被动语态be made to do sth.由句意,空处表“被迫意识到”用be made to realize。只有B合题意。
2.答案：C
解析：A.问题;B.快乐;C.方式;D.机会。根据What's the _____ of your great success 可知是指你成功的方法是什么 故选C。
3.答案：B
解析：A.tasting品尝；B.smelling闻；C.touching触摸；D.watching观看。根据语境可知狗可以通过闻我们的呼吸和汗水来了解人类的感受。故选B。
4.答案：D
解析：not only...... but also的谓语要与but also后面的人称一致，且后面的句子是过去时态，前面也要用过去时态。因为他们是"被老师表扬"，要用被动语态。
5.答案：D
解析：knowledge知识;invention发明; courage勇气;imagination想象。根据"make a picture in your mind"可知,在脑海里画画要运用想象。故选D。
6.答案：C
解析：as long as只要。
7.答案：B
解析：be used as意为"被用作"； be used by意为"被某人用"。
8.答案：B
解析：come to意为"想起"；come about意为"产生"； come up意为"走向"； come out意为"出版，开放"。
9.答案：C
解析：问句里含有过去时态，答语也要用相应的时态。故B、D排除。我是"没有被允许"。故选C。
10.答案：C
解析：考查构词法，词根是 invent发明(动词)； inventor发明家(名词)； invention发明(名词)。
二、阅读理解
11.答案：A
解析：细节理解题。根据a team of scientists from Germany has developed an underwater robot to help lifeguards in rescuing(救援) swimmers in emergencies.(来自德国的一个科学家团队开发了一种水下机器人,以帮助救生员在紧急情况下营救游泳者。)可知是为了帮助救生员在紧急情况下营救游泳者。故选A。
12.答案：A
解析：词义理解题。根据If swimmers' movements are consistent with drowning(溺亡), the information of the drowning person will be sent out, which is stored in a docking station on the pool floor, and it will be released by a signal from the monitoring cameras.(如果游泳者的动作与溺水一致,溺水者的信息将被发送出去,这些信息存储在游泳池地板上的一个停靠站中,并由监控摄像头发出信号。)可知指的是发出send out。故选A。
13.答案：B
解析：标题判断题。根据Because of a lack of trained lifeguards to watch over swimming pools, a team of scientists from Germany has developed an underwater robot to help lifeguards in rescuing(救援) swimmers in emergencies.(由于缺乏训练有素的救生员看守游泳池,德国的一个科学家团队开发了一种水下机器人,以帮助救生员在紧急情况下救助游泳运动员。)可知本文讲述的是一款防溺水机器人。故选B。