必修1unit2Learning about language

选择性必修第二册练习Unit 1 Science and scientistsLearning About Language基础演练I.单句填空1. He got caught in the heavy traffic.That was he was late.2. Energy is makes things work.3. We didn't set out；it was we wanted to wait until our mother came back.4. The most pleasant thing of the rainy season is one can be entirely free from dust.5. A ship in harbor is safe，but that's not ships are built for.6. The trouble is I can't find my way.7. What he wants to know is we can finish our work by tomorrow morning.8. The reason why I was sad was he didn't understand me.9. That is we are looking forward to.10. Do not let any failures discourage you，for you can never tell close you may be to victory.答案：1. why 2. what 3. because 4. that 5.what 6. that 7. whether 8.that 9. what 10.howII.单项选择1. “Every time you eat a sweet, drink green tea.” This is _____my mother used to tell me.1/ 13A. whatB. howC. thatD. whether【答案】A【详解】考查表语从句。

Unit 2English around the worldLearning about Language & Using LanguageⅠ.单句填空1. Sorry, I can't read the ________(express) on her face. I don't know how to please her.2. He took a taxi though Times Square was only a few ________ (block) away.3. After 25 years the town centre has changed beyond ________(recognize)．4．The wooden bridge is not strong enough to allow the passage of heavy ________(lorry)．5．Our country has set up friendly relations with ________ (neighbour) countries.6．He won't change his mind ________if you go and try to persuade him yourself.7．The manager requested that no one ________(tell) of his decision until the next meeting.8. He usually speaks ________dialect, so it is hard for everyone here to understand him.9. When she was finally able to leave the auto show, she drove ________(straight) to her children's international school.10. The command soon came from the general that roads ________(build) to link castles across the land.Ⅱ.短语填空believe it or not; play a vital part in; have a good command of; such as; the same as; be recognized as; beyond recognition; come up; be different from; make use of1. You can ________________ English only if you know well the background to English language.2. Music has been________________ the daily life of most Americans all the time.3. Returning to his hometown after a fifteen-year absence, he saw that all was changed ________________．4．________________，many great people are afraid of speaking in public as well, which doesn't prevent them from being famous figures.5. Professor Smith ________________one of the great scholars in English philology.6. British English ________________ American English. Do you know some of the differences between them?7. The sky was dark blue and clear when the moon________．8. It's more useful to learn modern languages, __________English and German, than Latin.9. On the train, he ________________his time and started to read his favourite book.10. Rick hasn't changed. He looks exactly ______________he did at school.Ⅲ.句型训练1．It was ________________ it rather than what he actually said that completely upset her.(the way定语从句)是他说话的方式而不是他实际所说的话使她十分恼火。

2020-2021学年高二英语人教版(2019)选择性必修第一册同步课时作业(5) Unit 2 Learning about Language一、填空1.These are examples of natural _________(克隆).2.Nobody could _________(预测) the final result.3.I'm sure that _________(人工的) intelligence will have a promising future.4.Our government has taken effective measures to fight against violent _________(犯罪活动).5.Advances in technology c_________(结合)with more open policies have already created an interconnected world.6.Many companies make ____________ a rule to send birthday e-cards to their customers.7.Explorers who work on scientific research ____________(stand) at the Arctic Pole this time tomorrow.8.We are confident that the environment ____________(improve) by our further efforts to reduce pollution.9.China will safeguard energy security by resource protection, ____________(advocate) green lifestyles and consumer culture.10.The watch is so beautiful and it happens to be 50 percent off, so I can't resist ____________ (buy) it.11.____________(oppose) to developing the nature reserve, the local people prevented the construction workers from entering their villages.12.WeChat is a great way to keep ____________ touch with other people and quickly broadcast information about where you are and what you are doing.13.It's high time that we placed great emphasis ____________the improvement of food safety.14.Some people always take seriously the ____________(predict) of the end of the world in the near future.15.In the ____________(absent) of clear goals, we are stuck in daily routine until we become slaves of it.二.阅读理解Nearly every week, we hear news about the latest successes and failures in driverless vehicles. But we hear little about how other industries are developing this same kind of technology.One industry heavily involved in researching and developing artificial intelligence, or AI, is agriculture. Companies are experimenting with high-tech tools that can help farmers save time and money, while reducing environment-harming chemicals.One of the companies is ecoRobotix of Switzerland. It created a robot equipped with AI and cameras to identify all plants on a farm. The robot has four wheels to carry it through the fields in search of weeds. Computer-controlled arms then lower and spray the weeds with small amounts of herbicide (除草剂). Company officials say the robot can fully operate on its own for up to 12 hours a day while being powered by the sun. It uses the same kind of sensor and positioning technology used to guide driverless vehicles. A farmer can also control the equipment through a smartphone.The co-founder of ecoRobotix, Aurelien Demaurex, says the farm robot can kill weeds with 20 times less herbicide than traditional methods. This is because the system uses exactly the right amount of chemical in the exact place required to kill the weeds. Currently, farmers spread weed killers over massive areas to destroy unwanted plants.Another company developing farm robotics is California-based Blue River Technology. The company has a system called "See & Spray", which it claims is the world's first smart sprayer. The system—which connects to the back of a tractor—is also equipped with AI to identify and chemically kill only the weeds. It can also spray chemicals on wanted plants to help them grow. Ben Chostner, vice-president of business development for Blue River Technology, explains in a company video that "See & Spray" technology uses the same deep learning methods used in facial recognition. "The first time the machine saw a pigweed, it didn't know what kind of plant it was. But we taught it—by giving it tens of thousands of examples of pigweed—and now it's an expert in pigweed."1.How will AI benefit agriculture?A.It will fund agriculture research.B.It contributes to low-cost farming.C.It can avoid harmful chemicals.D.It frees all farmers from field work.2.What do the products of the two companies have in common?A.They use recognition technology.B.They are powered by solar energy.C.They are connected with smart phones.D.They can help wanted plants grow rapidly.3.What do Ben Chostner's words suggest about the robot?A.It is environmentally friendly.B.It is good at self-improving.C.It has the learning ability.D.It can track various plants.4.What is mainly talked about in the text?A.The experiment in farming robots.B.New trend in artificial intelligence.C.Modern "See & Spray" technology.D.Artificial intelligence in agriculture.三.阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。