--- How much do you spend the new boots?---They me 50 yuan.A.buying; cost B.to buy; payC.buying; spend D.buy; take 题目和参考答案——青夏教育精英家教网—

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--- How much do you spend __________ the new boots?

---They __________me 50 yuan.

A.buying; cost B.to buy; pay

C.buying; spend D.buy; take

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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

— Why do you come here?

— Because I have to tell you.

A.anything important B.important anything

C.something important D.important something

—__________ your raincoat. It’s raining hard outside.

—Mum, I don’t like _________ the raincoat.

A.Putting on; wearing B.Wearing; putting on

C.Wear; putting on D.Put on; wearing

___________ Thursday afternoon, there is a basketball match _________Class 1 and Class 2.

A.On; among B.In; among C.On; between D.In; between

I am a member of the ________ Club. Look, in the picture, I am scoring a goal.

A.Football B.Maths C.Reading D.Swimming

Everyone gets a gift packet and it _________ a T-shirt and a map.

A.matches B.is matching

C.includes D.is including

—What ______ big fish it is!

—So it is! And ______ fish is my favorite food.

A./; / B.a; the C./; the D.a; /

Dear Jack,

How is it going? I write to tell you ________my first week at this new school. I really have a busy week. I ________very tired. I get up at 6.30 a.m. every day. Then I have to do some__________________ in 5 minutes. After that, I have ____________. My mother cooks it for me every day.__________________ she must get up earlier. My mother is an English teacher in my school, so I go to school with __________________ after breakfast. When we get __________________, it is often 7:20. The classes begin at 8:00. We have __________________ classes each day, four in the morning and three in the afternoon. We have many subjects at school, and I like all of them. But _________________ subjects are very difficult for me, so I have to work hard. After school, I have much homework. This week, I have little time to _______ TV or do sports. I hope things will be better next week.

Yours

Lydia

1.A.about B.at C.in

2.A.is B.are C.am

3.A.cleaning B.sleeping C.shopping

4.A.breakfast B.lunch C.supper

5.A.or B.because C.so

6.A.me B.you C.her

7.A.to home B.home C.to school

8.A.three B.four C.seven

9.A.some B.much C.any

10.A.see B.watch C.look

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