My best friend Linda lives in ______ on ______ floor.
A.twelfth room; five B.Room Twelve; the fifth
C.Room twelfth; five D.Twelve Room; the fifth
科目:初中英语 来源:牛津上海版英语九年级(9B) Final-examination(B)(含听力) 题型:单选题
In order to keep safe,we ___________keep away from crowded places.
A.may B.can C.need D.should
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The _____ man told us his past days before he ______. His ______ made us very sad.
A.dying; died; death B.dead; dying; die C.dead; died; dying D.dead; dying; death
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Please try your best to finish the work with ________ money and ________ people.
A.few; little B.a little; a few
C.less; fewer D.fewer; less
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—Do you mind my ______ here?
—______. Look at the sign. It says, “No smoking.”
A.to smoke; Of course not B.smoking; You’d better not
C.to smoke; No, I don’t D.smoking; Never mind
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科目:初中英语 来源:广东省深圳市深圳实验学校2019-2020学年八年级上学期期中英语试卷 题型:单选题
---Can you remember this park ? We ___________ here.
---Sure. But now I _______ in that swimming pool.
A.are used to take a walk;am used to swim
B.are used to take a walk;am used to swimming
C.used to take a walk; used to swim
D.used to take a walk;am used to swimming
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科目:初中英语 来源:广东省深圳市深圳实验学校2019-2020学年八年级上学期期中英语试卷 题型:单选题
In the exam, ______ we are, ______ mistakes we’ll make.
A.the more careless; the little B.more careful; fewer
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科目:初中英语 来源:广东省深圳市深圳实验学校2019-2020学年八年级上学期期中英语试卷 题型:单选题
—Tom works as an engineer in a big factory at present.
—Really? How long has he worked there?
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科目:初中英语 来源:江苏省仪征市2019-2020学年九年级12月月考英语试卷 题型:阅读单选
A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.
“It’s extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components (元件),” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. A few years ago, his team got the go-ahead to start piecing together the components. “The added difficulty with a project like this is that actually none of those components are off the shelf (现货供应) and so we have to develop them all on our own,” he said.
They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of interdependencie(相互依赖) on the individual components, each of which individually has to perform well, but then has to be matched well to everything it’s connected to,” said Wood. The flight device was built into a set of power, computation (计算), sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.
While this first robotic flyer is linked to a small, off-board (外置的) power source, the goal is eventually to equip it with a built-in power source, so that it might someday perform data-gathering work at rescue sites, in farmers’ fields or on the battlefield. “Basically it should be able to take off, land and fly around,” he said.
Wood says the design offers a new way to study flight mechanics and control at insect-scale. Yet, the power, sensing and computation technologies on board could have much broader applications. “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day-to-day basis.”
1.The difficulty the team of engineers met with while making the robotic fly was that ______.
A.they had no model in their mind B.they did not have enough time
C.they had no ready-made components D.they could not control flight tasks
2.It can be inferred from paragraphs 3 and 4 that the robotic fly ______.
A.consists of a flight device and a control system
B.can just fly in limited areas at the present time
C.can collect information from many sources now
D.has been put into wide application
3.Which of the following can be learned from the passage?
A.The robotic flyer is designed to learn about insects.
B.Animals are not allowed in biological experiments.
C.There used to be few ways to study how insects fly.
D.Wood’s design can replace animals in some experiments.
4.Which of the following might be the best title of the passage?
A.Father of Robotic Fly B.Inspiration from Engineering Science
C.Robotic Fly Imitates Real Life Insect D.Harvard Breaks Through in Insect Study
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