01　Unit 1 When was it invented 课时分层训练(一) 九年级英语 鲁教版

课时分层训练(一)　
Unit 1　When was it invented Section A
知识点一　invent的用法
1．Printing is a great invention (发明) of ancient China．
2．Edison was a great inventor (invent)．
3．The telephone was invented (invent) by the famous inventor—Bell．
知识点二　pleasure的用法
1．—I'd like to thank you for your invitation to Heze Peony Garden．
— B ．
A．With pleasure B．It's my pleasure
C．For pleasure
2．—Thank you for showing me around your beautiful city．I love it so much．
— D ．We are looking forward to your next visit to Binzhou!
A．Never mind B．All right
C．That's right D．My pleasure
3．我很乐意帮助你学英语。
I'm pleased to help you with your English．
4．我们一起度过了愉快的一天。
We spent a pleasant day together．
知识点三　mention的用法
1．—I've made little progress in my math，Li Ming．I'm really worried．
— D ，Liu Mei．It takes time．
A．Sounds good
B．Don't mention it
C．That's a good idea
D．Don't worry
解析：考查交际用语。句意：——李明，我的数学进步不大，我真的很担心。——别担心，刘梅。这需要花费时间。Sounds good．听起来不错；Don't mention it．别提了；That's a good idea．那是个好主意；Don't worry．别担心。根据“It takes time．”可知，此处应是安慰对方不要过于担心，故选D。
2．He mentioned (提到) some environmental problems in his report．
3．凯特在她的信中提到，她计划去度假。
Kate mentioned in her letter that she planned to go on vacation．
知识点四　low与short的用法辨析
1．The price of the computer is B ．You can save some money if you buy it．
A．little B．low
C．cheap D．expensive
2．Jim is the shortest (lowest/shortest) in his class．
3．We sell all our clothes at very low prices．
知识点五　somebody的用法
1．Daming is happy today because he helped C look for a set of keys on his way home．
A．nobody B．anybody
C．somebody D．everybody
解析：考查复合不定代词用法。句意：大明今天很高兴，因为他在回家的路上帮人找了一串钥匙。根据语境可知，本句是肯定句，故选C。
2．There isn't B in the classroom．All the students are having a P．E．lesson in the playground．
A．somebody B．anybody
C．nobody D．everybody
3．Somebody is (be) in the classroom now．
4．他自以为了不起，但其实是个无名小卒。
He thinks himself to be somebody ，but actually he is nobody ．
阅读理解
It is reported that China's biggest solar powered drone(太阳能无人驾驶飞机)，Qimingxing 50 or Morning Star 50，finished its first test flight in September，2022．The drone was built by the Aviation Industry Corporation of China(AVIC，中国航空工业集团有限公司)．
Drones have been used for quite a few years now．There are different ways of increasing the flying time．However，all these methods become less useful compared with the unlimited(无限的) power provided by the sun．That's why researchers have been working to make solar powered drones that can not only stay in the air for longer but also perform more tasks while in the sky．
In 2018，China tested the first version (版本) of Morning Star，which was 91 feet wide．Made from a special kind of plastic，the drone was so light，weighing only 41 pounds．Compared with it，Morning Star 50 is much larger and has a wingspan(翼展) of 164 feet．
On September 3，Morning Star 50 took off from an airport in Yulin City in Shaanxi Province in northwest China and landed back 26 minutes later after a smooth flight．The staff told some local reporters that all flight systems worked normally and successfully．It is reported that this is a good start for future flights of the solar powered drone that could last for many days or even months at a time．
(　B　)1．When did China's biggest solar powered drone finish its first test flight
A．In September，2018．
B．In September，2022．
C．In September，2019．
D．In September，2023．
B　解析：细节理解题。根据“It is reported that China's biggest solar powered drone(太阳能无人驾驶飞机)，Qimingxing 50 or Morning Star 50，finished its first test flight in September，2022．”可知，中国最大的太阳能无人驾驶飞机于2022年9月完成了首次试飞。故选B。
(　D　)2．What's the length of the wingspan of Morning Star 50
A．91 feet． 　　 B．41 feet．
C．64 feet． 　　 D．164 feet．
解析：细节理解题。根据“Morning Star 50 is much larger and has a wingspan(翼展) of 164 feet．”可知，翼展有164英尺。故选D。
(　B　)3．What did the staff think of Morning Star 50's test flight according to the last paragraph
A．It was dangerous．
B．It was successful．
C．It was unexpected．
D．It was simple．
解析：观点态度题。根据“The staff told some local reporters that all flight systems worked normally and successfully．”可知，工作人员告诉一些当地记者，所有飞行系统工作正常，运行顺利。故选B。
(　D　)4．What's the main purpose of the text
A．To compare many different kinds of drones．
B．To tell the importance of drones．
C．To discuss drones' all flight systems．
D．To report a drone's test flight．
D　解析：主旨大意题。根据“It is reported that China's biggest solar powered drone(太阳能无人驾驶飞机)，Qimingxing 50 or Morning Star 50，finished its first test flight in September，2022．”可知，本文报道了中国的“启明星 50”无人机及其首次试飞。故选D。
【创新运用】
语法填空
阅读下面短文，在空白处填入一个适当的单词或括号内所给单词的正确形式。
Nowadays，bikes are very popular in towns，cities as well as villages．But do you know the history of the bike In fact，the bicycle has a long and interesting history．1． The first bicycle was invented more than two hundred years ago．Early bicycles，however，did not look 2． like today's bikes．
One of the first bicycles was called the hobby horse．It was made of wood．People rode by 3． pushing (push) their feet along on the ground．
Later，a bicycle that had pedals(踏板) and metal tires(轮胎) was invented．It was not comfortable．It was called the boneshaker．4． Inventors (invent) kept working to make bicycles more comfortable．
Next，the high wheeler 5． was developed (develop)．It had a very big wheel in the front．This bicycle was not easy to ride，because the rider sat high up on it．The rider could be 6． badly (bad) hurt．
Then bicycles began to have two wheels 7． that/which were in the same size．More than one hundred years ago，bicycles began to have rubber tires that were filled 8． with air．That was a solution to the problem of a bumpy(不平的) ride．The new tires made riding become smoother than before．
Today，bicycling is safer and people ride bikes 9． to get (get) exercise．Science and technology are developing quickly these days and nobody knows what bikes 10． will be (be) like in the future．
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