That company wants to reduce prices to increase its market share, and this is _______ we differ from it.
A. whatB. which
C. whereD. why
Most of his mistakes _______ out of his nervousness, I am sure.
A. arose B. raised
C. rose D. lifted
Mary took _____ advantage of the opportunity and tried to make _______ good impression on her new boss.
A. an; a B. 不填；a
C. an；不填 D. 不填; 不填
请根据上面两幅图写一篇短文，写作时要注意以下几点：
1. 第一段把漫画中的内容描述清楚；
2. 第二段写你自己对此幅漫画的感受和观点；适当地发挥，使语言连贯。
词数：120左右
参考词汇：扶起瓶子straighten the bottle up
阅读下面短文，根据以下要求：（1）汉语提示；（2）首字母提示；（3）语境提示，在每个空格内填入一个适当的英语单词，所填单词要求意义准确、拼写正确。
Television has 1. (改变）people’s life much since it was invented. Now it has become one important part of modern life. People enjoy t 2. after hard work by watching TV. They can see some plays, some stories, some sports 3. (比赛) without going out of home, and without spending much money 4. tickets . TV programmes 79. make people’s life more interesting. People learn much 5. TV, students can study by watching some6. (教育性的）programmes. People can see news, weather reports, programmes about science and get 7. (知识) when they are watching TV. But not all the programmes are good e 8. .Today, there are too many programmers about love and crime. Some people become bad because those . programmes . And 9. TV usually takes too much time. B 10. , it’s not good for their eyes.
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.”
1.The robotic fly project has been conducted __________.
A. just by accident
B. within a decade
C. just by a professor
D. for more than ten years
2.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
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
