题目内容

There is an interesting talk show on TV now. Please _____.

A.turn it on B.turn on it

C.turn it off D.turn off it

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—Tom works as an engineer in a big factory at present.

—Really? How long has he worked there?

A.is B.visits C.has

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

The Slender West Lake Park shouldn’t be missed if you _ in Yangzhou.

A.were travelling B.travel C.have travelled D.will travel

The exam comes in July. When the exam finishes,the summer vacation begins. Boys and girls have two months to rest．The summer vacation is the best part of the year for most children. The weather is usually good. They can swim, go to summer camp or visit other places with their parents.

We all know that the beaches are good places to relax. Some children are lucky to live near the sea. They can enjoy the sea at any time. But for the children who live far from the sea,they go to the beaches for one or two weeks with their parents.

Why do children like spending their summer vacation on the beach? It is because they like the sand, the sun, the cool wind and the salty water. There are a lot of new things to see, nice things to eat and exciting things to do.

1.School children usually have exams ________.

A.in July B.before July C.after July D.by July

2.How long is the summer vacation?

A.Two weeks. B.Two months. C.Three months. D.One or two weeks.

3.Why do children like the summer vacation?

A.Because the weather is good. B.Because it is long.

C.Because they have lots of activities and the weather is good D.Because they can go to the beach.

4.Children who live near the beach can enjoy the sea ________.

A.at any time they want B.for one or two weeks

C.for two months D.for one month

5.Which of the following is TRUE?

A.Children like going to the beach only because they can see lots of new things.

B.Most parents can take their children to the beach and they can enjoy the sea at any time

C.Parents like the summer vacation best.

D.Children can swim and enjoy the sand,wind and water on the beach.

–Mom, could you buy me a dress like this?

--Certainly, we can buy ______ one than this, but ______ this.

A.a better, better than B.a cheaper, as good as

C.a worse, as good as D.a more important, not as good as

— 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

—What ______ big fish it is!

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

A./; / B.a; the C./; the D.a; /

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