Unit 1 Science and Scientists-【金版教程】2023-2024学年新教材高中英语选择性必修第二册作业与测评word（人教版2019）

UNIT 1　SCIENCE AND SCIENTISTS Section Ⅰ　Reading and Thinking 课时作业(一) Ⅰ　完形填空 (2023·福建省福州高中高二上学期适应性考试)When people talk about the future, we like to think that we will be able to drive out of our garages and take to the __1__ in our own personal flying car. The advantages are obvious. Some people __2__ this technology will allow complete three­dimensional freedom of movement. We could fly at 489 kilometres per hour, __3__ traffic lights, busy roads and speeding tickets. However, some people point to the disadvantages of flying cars. They claim that there are certain to be problems with traffic __4__. Another big problem is mechanical __5__. What will happen if they break down? __6__， if they become popular, there is likely to be another big problem: air traffic congestion. So it looks like flying cars face more than a few problems if they are to get off the ground! Most of us have printed out an electronic document on paper, but think about the __7__ of printing out a three­dimensional object in plastic. 3D printers build an object using layers line­by­line like a(n) __8__ printer until the object is complete. Vehicle companies like BMW and Volkswagen already use 3D printers to make life­size models of car parts. At the moment the process is slow and quality is __9__， but before long it might be possible to see a product on a website and then __10__ it to your printer at home. In the future we could make our own furniture, jewellery, cups, plates, shoes and toys from designs on our computers, and reduce the amount of __11__ we have to do. Imagine having your own Iron man suit. There are several companies trying to build a practical robot “exoskeleton”. This is a suit of robot arms and legs which follows your __12__. It will allow the wearer to lift heavy objects, walk long distances and even punch through walls! There are __13__ military advantages for this technology and might help people to walk again after disease or injury. However, besides cost and battery life,