1.选择题- (共7题)
1.在做盐跟盐反应的分组实验时，第一组学生进行BaCl2与Na2CO3溶液的反应，第二组学生进行BaCl2与Na2SO4溶液的反应。实验结束后，两组同学将全部的浊液集中倒进一个废液缸中。
5.现称取变质的氢氧化钠样品10 g，配制成溶液，再向其中加入CaCl2溶液(反应的化学方程式为：Na2CO3＋CaCl2＝CaCO3↓＋2NaCl)。反应时CaCl2溶液与沉淀的质量关系如图所示。解决以下问题：
2.单项选择- (共11题)
8.
If you want to see the chairman of the department, you’d better make an _______ with his secretary first.
| A．admission | B．agreement |
| C．appointment | D．assumption |
9.
There are two roads leading to the power station along the river．You can take___________ of the roads．
| A．either | B．any |
| C．neither | D．both |
10.
—How did you like Nick
—To be honest, his singing didn’t _______to me much
A. appeal B . belong
C refer D. occur
—To be honest, his singing didn’t _______to me much
A. appeal B . belong
C refer D. occur
11.
．The Rubber Duck ____ more attention to the two parks than usual during Mid –Autumn Festival and National Day holidays .
| A．paid | B．drew | C．appealed | D．let |
12.
You don`t have to dress up ．The party is pretty ___ ．We only need to bring a bottle of wine．
| A．adventurous | B．casual |
| C．comfortable | D．beneficial |
13.
Christmas is a holiday usually celebrated on December 25th ____________ the birth of Jesus Christ．
| A．in charge of | B．in terms of |
| C．in favor of | D．in honor of |
14.
The crazy fans___________ patiently for two hours, and they will wait till the movie star arrives.
| A．are waiting | B．had waited |
| C．have been waiting | D．will wait |
15.
Not until the train pulled into the next station _______ her suitcase gone.
| A．Maryhadfound | B．hadMaryfound |
| C．didMaryfind | D．foundMary |
16.
The government should protect the old valuable buildings ____ they are not in
harmony with the modern ones nearby．
harmony with the modern ones nearby．
| A．eventhough | B．asif |
| C．evenso | D．nowthat |
17.
The new CCTV Tower, ___________ shape is uniquely designed, is frequently visited by traveler.
| A．its | B．which |
| C．where | D．whose |
18.
Dr. Smith as well as his daughters, visit Beijing this summer.
| A．isgoingto | B．aregoingto |
| C．wasgoingto | D．weregoingto |
3.阅读理解- (共1题)
19.
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 integrated 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 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 interdependencies 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, 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 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.”
【小题1】The difficulty the team of engineers met with while making the robotic fly was that __________.
【小题2】It can be inferred from paragraphs 3 and 4 that the robotic fly __________.
【小题3】Which of the following can be learned from the passage?
【小题4】Which of the following might be the best title of the passage?
“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 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 interdependencies 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, 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 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.”
【小题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 sufficient time |
| C．they had no ready-made components |
| D．they could not assemble the components |
| 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 |
| D．has been put into wide application |
| 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. |
| A．Father of Robotic Fly |
| B．Inspiration from Engineering Science |
| C．Robotic Fly Imitates Real Life Insect |
| D．Harvard Breaks Through in Insect Study |
试卷分析
-
【1】题量占比
选择题:(7道)
单项选择:(11道)
阅读理解:(1道)
-
【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：10
7星难题：0
8星难题：1
9星难题：1