[题目]Much labor would have been saved if the electronic computers before.A. had invented B. were inventedC. should have been invented D. had been invented 题目和参考答案——青夏教育精英家教网—

【题目】Much labor would have been saved if the electronic computers_____________ before.

A. had invented B. were invented

C. should have been invented D. had been invented

【答案】D

【解析】

试题分析：考查虚拟语气。句意：如果以前电脑被发明出来，更多劳动力就会被节省下来。本句考查的是if引导的条件状语从句的虚拟语气，当与过去事实相反的时候，从句使用过去完成时，主句使用“情态动词+have+done”。根据句意可知本句使用被动语态，故D正确。

练习册系列答案

学业测评一卷通小学升学试题汇编系列答案

小学单元综合练习与检测系列答案

实验探究报告练习册系列答案

单元学习体验与评价系列答案

黄冈小状元小学升学考试冲刺复习卷系列答案

年级	高中课程	年级	初中课程
高一	高一免费课程推荐！	初一	初一免费课程推荐！
高二	高二免费课程推荐！	初二	初二免费课程推荐！
高三	高三免费课程推荐！	初三	初三免费课程推荐！
更多初中、高中辅导课程推荐,点击进入>>

相关习题

科目：高中英语 来源： 题型：

【题目】Dream Big with Caledonia

Caledonian Sleeper is a gateway to a world of possibilities with our overnight rail service bringing a touch of the extraordinary to travel between London and Edinburgh.

Taste the local food, have the ultimate sleep on our comfortable bed and enjoy a private room with toilet and shower. And above all, wake up refreshed, ready to start an adventure at your destination.

We offer two categories of rail tickets to travel on our service:

Caledonian Sleeper Fixed Advance: Our Fixed Advance tickets offer our best value fares. No changes, refunds or upgrades are allowed. Available for Club rooms (￡150/passenger) a Classic rooms (￡100/passenger). Book at least 2 months in advance.

Caledonian Sleeper Flexible: Our Flexible tickets are fully refundable. Available for Caledonian Double(￡200/passenger), Club rooms (￡170/passenger), Classic rooms (￡120/passenger) and Comfort seats (￡50/passenger). Book anytime if available.

Notice: These are single (one-way) tickets; to make a return journey, just buy two single tickets.

Oops! a family getaway can often feel like someone is missing if your furry friend is left behind. If you are travelling in a Caledonian Double or Club room, you're welcome to bring up to 2 pets with an additional fare as low as ￡30 per room.

【1】What is promoted in this text?

A.A travel package.

B.A train service.

C.A family plan.

D.An accommodation service.

【2】All ticket holders can enjoy without extra charge.

A.Wi-Fi signalsB.priority boarding

C.on-board breakfastD.charging points

【3】What is the lowest round-trip fare for a married couple with their two pet dogs?

A.￡230.B.￡330.C.￡660.D.￡740.

查看答案和解析>>

科目：高中英语 来源： 题型：

【题目】听下面一段较长对话，回答以下小题。

【1】What will the man do on his birthday?

A.Go out for a meal.B.Go to see a film.C.Work on his term’s work.

【2】What is the relationship between the speakers?

A.Brother and sister.B.Classmates.C.Teacher and student.

查看答案和解析>>

科目：高中英语 来源： 题型：

【题目】请阅读下面有关我国短视频收入的柱状图及相关文字，按照要求写一篇150 词左右的文章。

The short video industry experienced explosive growth in 2018，with its market value reaching 11.8 billion yuan，up 110 percent. It is estimated that the figure will hit 35 billion yuan by 2020.

There are several ways for short video posters to make a profit：from advertisements，virtual gifts sent by fans which can be converted into cash，selling products online or charging viewers for the content.

Some of the main video sharing platforms such as Douyin，also known as TikTok，and Kuaishou have launched campaigns cooperating with local governments to help some rural residents out of poverty. In the past year，over 16 million vloggers gained income on Kuaishou， of which 3.4 million people came from areas in poverty but with rich resources.

（写作内容）

1. 用约 30 个单词概述柱状图信息的主要内容；

2. 短视频流行的原因有哪些，简要谈谈你的看法（原因不少于两点）；

3. 谈谈你对如何规范短视频的建议。

（写作要求）

1. 写作过程中不能直接引用原文语句；

2. 作文中不能出现真实姓名和学校名称；

3. 不必写标题。

（评分标准）

内容完整，语言规范，语篇连贯，词数适当。

______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

查看答案和解析>>

科目：高中英语 来源： 题型：