相关知识点: 试题来源: 解析 A。本题考查现在完成时的被动语态。“in the past few years”是现在完成时的标志,强调过去发生的动作对现在造成的影响,且“inventions”与“make”之间是被动关系,所以用现在完成时的被动语态“have been made”。反馈 收藏 ...
句中Inthepastfewyears为现在完成时时间标志;同时inventions与use之间是被动关系,故使用现在完成时的被动语态。故选:C。【思路点拨】在过去的几年里,像3D打印机这样的新发明已经被用来制造替代心脏和骨骼的部件。【解题思路】解题时要区分清选择项的含义与区别,再联系句意进行判断,从而选出正确答案。考生做此类题型,...
In the past few years,many inventions have come about in many fields.They have made our world develop rapidly and made our life more convenient(方便的).For example,on April 9,2010,the world's first sun-powered aircraft took off from a runway in Payerne,Switzerland.a group of engineers mad...
What do you think are the most important inventions of the past 2 000 years? The TV? The printing? The telephone? Or the computer? A report shows that these are not the only important inventions. Here are four other important ones. Paper is one of the most important inventions. You can...
In the past few years, many new inventions have been made. Smartphones, for example, have become an essential part of our daily lives. They are used for communication, entertainment, and even work. Many apps have also been developed to help us in different ways. 1. Smartphones ___ ...
There are a lot of things in our schoolbags, i70pencils, rulers, books and so on. None of them grow in the field. People make them in factories. They look common today, but hundreds of years ago no one knew about them. Who invented them? Where were they invented? We aren't sure....
M9 Unit2 Will books be replaced by the Internet? Unit2 New vocabulary: 1.look through 浏览 2.printing 印刷 (print 打印 v.) look up 查字典 look out 小心 look down向下看/look down on sb 看不起某人 look into 向里看/调查 Paper was first created about 2,000 years ago in China. After ...
I. Listen to the conversation in Acitivity 3 and answer the following questions. 1. Why does Tony want to borrow a camera 2. Will his father lend him the camera What does his father ask him to do II. Read the conversation and find the changes in the past and today. ...
000 years ago that fire was fully utilized to the point where it was considered a tool. Apart from giving us warmth in the cold and light in the dark, fire led us to develop skills like cooking. The ability to prepare healthier food and cleaner drinking water helped ensure human survival...
Frank Epperson invented the Popsicle in 1905 when he was only 11 years old. It was called the Epsicle at that time. Frank left his drink outside the door overnight with a stick(木棒) in it. That night the temperature dropped and Frank’s drink was frozen. That didn’t stop him from...