16. ---- How long has this church been in ser...

16. ---- How long has this church been in service?

----_________1682, I’m afraid.

高三英语单项填空简单题查看答案及解析

----How long have you been in this office?

----Just a few minutes．I_____ here together with my cousin。

A．have walked    B．had walked

C．have been walking    D．walked

高三英语单项填空中等难度题查看答案及解析

How long has 3-D technology been around? Most of us might think of crowds of teenagers in a 1950’s movie house watching Bwana Devil in 3-D. But 3-D technology made its first appearance on the scene in 1838 with the first stereoscope(体视镜). And the first actual 3-D movie was a 1903 film called Le Ariveed’un Train.

Although it has such a long history, the technology has still remained based on one simple principle-----to make 3-D effects you must find a way to project two slightly different pictures to each eye. Modern 3-D technology works by rapidly flickering(闪动) two versions of the movie and projecting them onto each eye. The brain does the rest of the work, combining the two pictures together into one and giving the show the appearance of depth, the third dimension.

But does this exposure, especially long exposures, cause harm to the child’s developing brain and visual system? Unfortunately, long-term studies on new flicker digital 3-D technology and children aren’t yet available. We do not know if regular or daily 3-D viewing over years affects the developing visual system, although older 3-D methods basically do the same thing and are not considered harmful.

The question of possible harm in modern 3-D use in TV is really based on two facts: the amount of time children will now be watching 3-D TV each day and the sensitivity some children show in reaction to 3-D viewing. It is difficult to make actual lab studies of longer term 3-D viewing in children because of the possible harm of the experiment. Researchers will have to wait until 3-D TV technology is already in the marketplace for a number of years, then check heavy 3-D TV watchers and compare them with non-watchers.

With a 3-D television technology in the home, we will soon be able to answer the question of whether or not longer and more frequent periods of 3-D exposure cause more changes in the visual system. We may find that the bigger problem is the introduction of a new technology that leads to even more time spent on TV rather than playing outdoors.

1.According to the text, 3-D technology ______

A. was refused by people when it first appeared.

B. will soon change the way we watch TV.

C. does no good to our visual system.

D. has a history of nearly 200 years.

2.Paragraph 2 is mainly about________

A. how 3-D technology works.

B. why 3-D movies are popular

C. the history of 3-D technology.

D. the influence of 3-D technology.

3.What’s the method suggested in paragraph 4?

A. To wait and see　　 B. To carry out lab studies

C. To stop making 3-D movies　　 D. To improve 3-D technology

4.The author’s purpose in writing the text is to _______

A. ask children not to watch 3-D movies

B. discuss if 3-D viewing is harmful to children.

C. introduce the advantages of 3-D technology.

D. predict the development of 3-D technology.

高三英语阅读理解中等难度题查看答案及解析

– How long _____ in this job?             – Since 1990.

高三英语单项填空简单题查看答案及解析

— How long have you been in this office?

— Just a few minutes．My cousins _______ here together with me．

A．have walked                           B．had walked

C．walked                               D．have been walking

高三英语单项填空中等难度题查看答案及解析

—How long have you been in this office?

—Just a few minutes.My cousins ________ here together with me.

A．have walked　　　     B．had walked

C．walked　　　　     D．have been walking

高三英语单项填空中等难度题查看答案及解析

听下面一段较长对话，回答以下小题。

1.How long has the man been in London?

A.One year. B.A few years. C.A couple of months.

2.Why did the woman leave her hometown?

A.To lead a city life. B.To open a restaurant. C.To find a job.

3.Where did the woman come from?

A.London. B.Arnside. C.Lancaster.

高三英语长对话中等难度题查看答案及解析

听下面一段较长对话，回答以下小题。

1.How long has the man been in the hospital?

A. For 2 years.　　 B. For 6 years.　　 C. For 7 years.

2.What will the man serve as in Nigeria?

A. An organizer.　　 B. A nurse.　　 C. A doctor.

3.What can we learn from the conversation?

A. The man got his new job this morning.

B. The woman is against the man's decision.

C. The man wants to marry Rosie.

高三英语长对话中等难度题查看答案及解析

Hi, Bill. I _____ you _____ in this city. How long have been here?

高三英语单项填空简单题查看答案及解析

听下面一段较长对话，回答以下小题。

1.How long has the man been in China?

A.For one year. B.For two years. C.For four years.

2.Where are the speakers?

A.In an office. B.In a restaurant. C.In a park.

3.What is the main subject of the conversation?

A.Entertainment. B.History. C.Culture.

高三英语长对话中等难度题查看答案及解析