皮皮学,免费搜题
登录
logo - 刷刷题
搜题
【简答题】
What might the future be like? Here are some predictions: things to come, things to go. The Spring Festival, the most important Chinese holiday when everyone returns home, has caused headaches for millions of Chinese. More than 2 billion people travel at the same time, making getting travel tickets and the journey difficult. But in 28 years, Spring Festival travel may not be a problem at all. China plans to build more than 120,000 kilometers of railway and a fast transportation network that will serve 90% of the population by 2020. And because most of China will be cities, people will not have to go to other places to find a job, so it will no longer be a problem. Newspaper will come to an end in 2043. In the future, digital(数字的) newspapers will be sent to personal web tools through Internet. Readers can discuss topics with journalists and editors. Information will move faster. Oil is running out faster than expected. But scientists have found something else for oil as fuel(燃料). Coal, natural gas, solar power, nuclear power and even water can take the place of oil as sources of energy(能源). Schools will go electronic(电子化). Computers will be important and popular among the students. Everything will be in the computer and students will not need to bring books to school. They will find information on the Internet. A computer will be the students’ library, schoolbag and connection to the outside world. There will be robot teachers, they will check homework on computers and communicate with the students’ parents through e-mail. And school buses will be like spaceships, comfortable and safe. 小题1: More than 2 billion people have a hard time returning home during                . A.Christmas Day B.National Day C.the Spring Festival D.the Mid-autumn Festival 小题2:The newspapers will disappear                . A.in 28 years B.by 2020 C.by 2053 D.in 33 years 小题3:               is not mentioned in the passage as sources of energy. A.Coal B.Wind C.Nuclear power D.Water 小题4:From the passage we can know                 in the future. A.the Spring Festival travel may still be a problem B.90% of the population will live in the city C.robot teachers will check homework D.readers can discuss topics with each other through Internet 小题5:What’s the main idea of the last paragraph?                 . A.Schools will go electronic B.Computers will be important C.There will be robot teachers D.School buses will be like spaceships
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【判断题】“望远镜可以望见远的目标,却不能代替你走半步。”这句话说明,有制定措施,积极行动,才能保障目标的实现。
A.
正确
B.
错误
【简答题】汽缸的热膨胀是指()的膨胀。
【单选题】在散列存储中,装填因子α的值越大,存取元素时发生冲突的可能性就____。
A.
越小
B.
越大
C.
不确定
D.
相同
【简答题】随着经济的发展,汽车已进入了普通百姓的家庭. (1)在挑选汽车时,发动机(汽油机)效率的高低是区分汽车优劣的重要指标之一.有经验的司机可以通过闻尾气的气味做出初步的判断.输出功率相同时,汽油味越淡,汽车发动机效率越______(填“高”或“低”),原因是汽油味越淡,______. (2)某单缸汽油发动机汽缸的活塞面积是120cm 2 ,做功冲程中活塞移动的距离是30cm,气体的平均压强是5×10 ...
【单选题】汽缸的热膨胀是指()。
A.
汽缸相对于转子的热膨胀;
B.
汽缸相对于基础的热膨胀;
C.
汽缸相对于轴承座的热膨胀;
D.
汽缸相对于膨胀死点的热膨胀。
【单选题】在散列存储中,装填因子α的值越大,则存取元素时发生冲突的可能性就( )。
A.
越大
B.
越小
C.
不确定
【多选题】汽缸的热膨胀是指()。
A.
汽缸相对于转子的热膨胀;
B.
汽缸相对于基础的热膨胀;
C.
汽缸相对于轴承座的热膨胀;
D.
汽缸相对于膨胀死点的热膨胀。
【简答题】已知测量齿轮齿数Z=18,采用变磁通感应式传感器测量工作轴转速(如图所示)。若测得输出电动势的交变频率为24(Hz),求:被测轴的转速n(r/min)为多少?当分辨误差为±1齿时,转速测量误差是多少?
【判断题】正胀差是指转子的热膨胀值比汽缸的热膨胀值更小。
A.
正确
B.
错误
【判断题】望远镜可以望见远的目标,却不能代替你走半步。这句话说明,只有制定措施,积极行动,才能保障目标实现。
A.
正确
B.
错误
相关题目:
参考解析:
知识点:
题目纠错 0
发布
创建自己的小题库 - 刷刷题