Though the “No smoking” signs have existed fo...

Though the "No smoking" signs have existed for long in public places, heavy smokers often________them and light up cigarettes.

A．abandon          B．postpone          C．decline           D．ignore

高三英语单项填空中等难度题查看答案及解析

Though the “No smoking” signs have existed for long in public places, heavy smokers often ________ them and light up cigarettes.

A．abandon　     B．postpone

C．decline　     D．ignore

高三英语单项填空简单题查看答案及解析

The two strangers have been talking in the park for a long time as though they ______old friends.

高三英语单项填空简单题查看答案及解析

Photographic self-portraits have existed for as long as cameras have been in human hands. But what about selfies in space? On Twitter last year, NASA astronaut Edwin Aldrin, who famously became the second man to walk on the moon in July 1969, laid claim to a spaceflight first: taking the first selfie in space during the Gemini XII mission in 1966.

“For me, it needs to be digital to be selfie,” argues Jennifer Levasseur, a director at the Smithsonian National Air and Space Museum. According to Levasseur, the concept of a selfie is directly linked to internet culture. “The thing that makes a selfie is sharing it,” she says.

Still, astronauts have been carrying cameras aboard space vehicles since the 1960s. In 1966, Aldrin used a Hasselblad camera designed specifically for space. Hasselblad also painted the first camera in space a matte(磨砂) black to reduce reflections in the orbiter window. But cameras used in space need to survive extreme conditions, like temperature swings from -149° to 248°F, so Hasselblad painted later model silver.

Astronauts visiting the moon then had to take out the film and leave their camera bodies behind when they returned to Earth, because early space missions were limited by a weight limit on the returned trip. Then a big change in space camera technology came after the space shuttle Columbia broke apart on its return to Earth in 2003, Levasseur notes. “Fear that they’d never be able to bring film back from space and lose all that hard work accelerated the push for digital,” she says.

Today, astronauts also have access to internet and social platforms in space and can post true space selfies made using digital cameras. Similarly, space robots are participating in selfie culture, capturing remote pictures of themselves in space or on other planets and sending them back to Earth.

1.Why do selfies in space need to be digital according to Jennifer Levasseur?

A.Astronauts are fond of studying technology.

B.Astronauts are eager to be famous on the Internet.

C.Astronauts desire to communicate on social platforms.

D.Astronauts want to overcome the fear in space.

2.Why can the Hasselblad camera adjust to the temperature changes in space?

A.It is painted silver.

B.Its matte black gathers light.

C.Its design is special.

D.It can reduce reflection itself.

3.What contributed to the faster development of camera technology in space?

A.The heavy space tasks.

B.A returned space shuttle.

C.A spaceflight crash.

D.The improved film.

4.What can be a suitable title for the text?

A.The Origin of Selfies in Space

B.The Brief History of Selfies in Space

C.The Significance of Selfies in Space

D.The Popularity of Selfies in Space

高三英语阅读理解困难题查看答案及解析

(2013·南京二模)Though having discussed it for long, they still haven't reached an agreement ________ they should pour more money into the project.

A．whether　     B．if

C．that　     D．what

高三英语单项填空中等难度题查看答案及解析

NASA’s Mars detector (探测器), Opportunity, succeeded in finding signs that water once existed on the planet. Opportunity landed on Mars in January. Scientists now believe that the planet could once have supported life.

This discovery was chosen by Science, one of the world’s leading magazines, as the most important scientific achievement of 2004 last Friday.

“This little, wheeled, one-armed box went around another planet and has done something no human has ever managed,” according to Science. “It has discovered another place in the universe where life could once have existed.”

“Although we still can’t say that life could have existed in this environment, it is now certain that there was water on Mars,” said Steve Squyres, one of the scientists working on the Mars mission. The evidence comes from pictures and chemical readings taken by Opportunity. It includes marks on rocks like those caused by flowing water on Earth and salty chemicals like those found in dried-out sea-beds. Scientists said the new evidence proved beyond doubt that water has existed on Mars. But it is still unknown whether the water on Mars was like an ocean or justice.

While Opportunity has not found any signs of life, the presence of water means life is possible. “In everything we know about life on Earth, there is no example without liquid water,” Squyres said. “So water is important for the search for life on Mars.”

Researchers agree that a future mission (任务) should bring back physical samples (样品). But some scientists worry about the risk that this could introduce dangerous foreign creatures to Earth. “The problem here is how to get the samples back,” Squyres replied. “I think it is our responsibility to limit any risk.”

1.________ prove that water existed on Mars.

2.Which of the following is TURE according to the text?

3.How did scientists draw the conclusion that there was water on Mars?

4.It can be inferred that, if the creatures from Mars came to Earth, ________.

高三英语阅读理解困难题查看答案及解析

NASA’s Mars detector (探测器), Opportunity, succeeded in finding signs that water once existed on the planet. Opportunity landed on Mars in January. Scientists now believe that the planet could once have supported life.

This discovery was chosen by Science, one of the world’s leading magazines, as the most important scientific achievement of 2004 last Friday.

“This little, wheeled, one-armed box went around another planet and has done something no human has ever managed,” according to Science. “It has discovered another place in the universe where life could once have existed.”

“Although we still can’t say that life could have existed in this environment, it is now certain that there was water on Mars,” said Steve Squyres, one of the scientists working on the Mars mission. The evidence comes from pictures and chemical readings taken by Opportunity. It includes marks on rocks like those caused by flowing water on Earth and salty chemicals like those found in dried-out sea-beds. Scientists said the new evidence proved beyond doubt that water has existed on Mars. But it is still unknown whether the water on Mars was like an ocean or just ice.

While Opportunity has not found any signs of life, the presence of water means life is possible. “In everything we know about life on Earth, there is no example without liquid water,” Squyres said. “So water is important for the search for life on Mars.”

Researchers agree that a future mission (任务) should bring back physical samples (样品). But some scientists worry about the risk that this could introduce dangerous foreign creatures to Earth. “The problem here is how to get the samples back,” Squyres replied. “I think it is our responsibility to limit any risk.”

1.________ prove that water existed on Mars.

2.Which of the following is TURE according to the text?

3.How did scientists draw the conclusion that there was water on Mars?

4.It can be inferred that, if the creatures from Mars came to Earth, ________.

高三英语阅读理解中等难度题查看答案及解析

I smoke out of ______ habit, not for ______ pleasure; for I have been in the habit for more than twenty years．

高三英语单项填空中等难度题查看答案及解析

Even though they have worked side by side in the same office for 9 years, the two ladies ______ on good terms.

A. are not          B. were not         C. have not been        D. will not be

高三英语单项填空中等难度题查看答案及解析

Even though they have worked side by side in the same office for 9 years, the two ladies ______ on good terms.

A. are not                            B. were not                         C. have not been               D. will not be

高三英语单项填空中等难度题查看答案及解析