It_______ ten years since Professor Du last_______ to the earth.
A. was； came B. has been； come
C. was, come D. is； came
Mike's father_______ to London last month. He_______ there three times.
A. went； had gone B. has gone； has been
C. went； has been D. has been； had gone
He used ____on the right in China, but he soon was used____on the left in England.
A. to drive； to drive B. to drive； driving
C. to driving； to drive D. to drive； to driving
根据句意,用括号内所给单词的适当形式填空。
1.It’s good manners to speak to the old ______________（polite）.
2.________________ (communicate) between countries used to be very hard.
3.I was born in a ____________ (south) city in China.
4.Some ______________ (Canada) students will visit our school next week.
根据句意和汉语注释，写出单词的正确形式。
1.The famous actor was found ________________ (死的) at home last night.
2.The writer ________________ (接到，收到) thousands of letters every month in the past.
3.Just as the saying goes, “________________(实践，练习) makes perfect.”
4.We can often see signs like “No ________________ (实践，练习)” in parks.
“High tech” and “state of the art” are two expressions that describe very modern technology(技术). High tech is just a shorter way of saying high technology. And high technology describes any invention (发明) or system that uses the newest ideas or discoveries of science and engineering.
What is high tech? A computer is high tech. So is a communications satellite(卫星). A modern manufacturing (制造业的) system is surely high tech.
High tech became a popular expression in the United States during the early 1980’s. Because of improvements in technology, people could buy many new kinds of products(产品) in American stores, such as home computers, microwave ovens (微波炉), etc. “State of the art” is something that is as modern as possible. It is a product that is based on the very latest ways and technology. Something that is “state of the art” is the newest possible design or product of a business or industry. A state of the art television set, for example, uses the most modern electronic design and parts. It is the best that one can buy.
“State of the art” is not a new expression. Engineers have used it for years, to describe the best and most modern way of doing something.
Millions of Americans began to use the expression in the late 1970’s. The reason was the computer revolution(革命). Every computer company claimed (声称) that its computers were “state of the art”.
Computer technology changes so fast that a state of the art computer today might be old tomorrow. The expression “state of the art” has become as common and popular as computers themselves. Now all kinds of products are said to be “state of the art”.
1.What is the purpose of the passage?
A. To tell how “high tech” and “state of the art” have developed.
B. To give examples of high tech.
C. To tell what “high tech” and “state of the art” are.
D. To describe very modern technology.
2. What can we learn from the passage?
A. “High tech” and “State of the art” are two expressions that describe traditional things.
B. “High tech” describes a technology that is not traditional.
C. “State of the art” became popular later than “high tech”.
D. A lantern out of a big orange pumpkin is “state of the art”.
3.Which of the following statements is NOT true?
A. Since the computer revolution, the expression “state of the art” has become popular.
B. “State of the art” means something that is the best one can buy.
C. With the development of computer technology, a state of the art computer may easily become unpopular.
D. All kinds of products are “state of the art” nowadays.
4.The best title for the passage is_____.?
A. Computer Technology
B. High Tech and State of the Art
C. Most Advanced Technology
D. Two New Expressions
