Now it’s been possible for us to be taken int...

Now it’s been possible for us to be taken into “space”, ________we can experience weightlessness for a short time.

A. which    B. when    C. where    D. that

高二英语单项填空困难题查看答案及解析

I wonder if it would be possible for us to see you at your earliest _______ and discuss the matter in detail.

A. compromise　　　　　 B. convenience

C. consideration　　 D. commitment

高二英语单项填空中等难度题查看答案及解析

Anyone for rocket salad? The Chinese are now growing huge vegetables from seeds they sent into space.

If you are the type who worries about the air miles travelled by fruits and vegetables, these beauties aren’t for you. It's because they have travelled a little further than most.

The seeds from which they grew were fired into space,  where they orbited the earth for two weeks. Once they returned they   were grown in hothouses, producing the monster kinds seen here.

China, which is behind these space fruits and vegetables, says they could be the answer to the world's food crisis.

The 21-pound tomatoes, nine-inch chillies,   15-stone pumpkins and large watermelons growing at the Guangdong Academy of Agricultural Sciences’ hothouses   can feed many more than their smaller cousins, and may have more nutrients, the scientists say.

Researcher Lo Zhigang said, "Traditional agricultural development has taken us as far as we can go and demand for food from a growing population is endless. Space seeds offer the opportunity to grow fruits and vegetables bigger and faster. "

He admitted he and his colleagues could not explain why time in orbit caused the seeds to change genetic structure. But they guessed exposure to the cosmic（宇宙的）radiation that attacked the spacecraft in orbit, as well as   the near zero gravity conditions, microgravity, could play a part.

"We don't think there's any threat to human health because the genes themselves do not change; just their order changes," he said. "With genetically-modified（GM）crops you have seen environmental problems because they have added genes that can damage other organisms. But with space seeds they don't gain genes; they can only lose them. "

He also claimed the Vitamin C content in some space vegetables was nearly three times higher than in common vegetables, while levels of zinc are also increased.

Western scientists are doubtful. NASA researchers who have experimented with seeds in space say there is not enough benefit to show the cost is reasonable.

1.What do the underlined words "these beauties" in Paragraph 2 probably refer to ______?

A. Beautiful views along the air routes.

B. Travelling experiences in space.

C. Seeds fired into space.

D. Giant vegetables.

2.We can infer from Lo’s words in Paragraph 6 that _______.

A. our conventional agriculture has developed too slowly.

B. we are asking too much from nature

C. space seeds may help meet our demand for food

D. we'll grow crops in space in the future

3.Why the seeds changed their genetic structure _______.

A. remains to be proved

B. is discovered by Lo Zhigang

C. has something to do with the conditions in hothouses

D. is due to the radiation that attacked them directly

4.What can be inferred from the last paragraph?

A. Western scientists’ doubt is unreasonable.

B. Western scientists don’t believe that Chinese scientists have succeeded in the experiment.

C. Western scientists have proved space seeds to be of no benefit.

D. Western scientists think the cost of space seeds outweighs the benefits

高二英语阅读理解中等难度题查看答案及解析

Anyone for rocket salad?        The Chinese are now growing huge vegetables from seeds they sent into space.

If you’re the type who worries about the air miles traveled by fruits and vegetables,  these beauties aren’t for you. It’s because they have traveled a little further than most.

The seeds from which they grew were fired into space, where they orbited the earth for two weeks. Once they returned they were grown in hothouses, producing the monster kinds seen here.

China, which is behind these space fruits and vegetables, says they could be the answer to the world’s food crisis.

The 21-pound tomatoes, nine-inch chilies, 15-stone pumpkins and large watermelons growing at the Guangdong Academy of Agricultural Sciences’ hothouses can feed many more than their smaller cousins, and may have more nutrients, the scientists say.

Researcher Lo Zhigang said, “Traditional agricultural development has taken us as far as we can go and demand for food from a growing population is endless. Space seeds offer the opportunity to grow fruits and vegetables bigger and faster.”

He admitted he and his colleagues could not explain why time in orbit caused the seeds to change genetic structure. But they guessed exposure to the cosmic(宇宙的) radiation that attacked the spacecraft in orbit, as well as the near zero gravity conditions, microgravity, could play a part.

“We don’t think there’s any threat to human health because the genes themselves do not change; just their order changes,” he said. “With genetically-modified(GM) crops you have seen environmental problems because they have added genes that can damage other organisms. But with space seeds they don’t gain genes; they can only lose them.”

He also claimed the Vitamin C content in some space vegetables was nearly three times higher than in common vegetables, while levels of zinc are also increased.

Western scientists are doubtful. NASA researchers who have experimented with seeds in space say there is not enough benefit to show the cost is reasonable.

72. What do the underlined words “these beauties” in paragraph 2 probably refer to?

A. Beautiful views along the air routes.           B. Traveling experiences in space.

C. Seeds fired into space.                                     D. Giant vegetables.

73. We can infer from Lo’s words in paragraph 6 that       .

A. our conventional agriculture has developed too slowly

B. we are asking too much from nature

C. space seeds may help meet our demand for food

D. we’ll grow crops in space in the future

74. Why the seeds changed their genetic structure      .

A. remains to be proved

B. is discovered by Lo Zhigang

C. has something to do with die conditions in hothouses

D. is due to the radiation that attacked them directly

75. Comparing Gm crops and space crops, we can see that      .

A. space crops grow faster

B. space crops are more environmentally friendly

C. GM crops are less a threat to human health

D. GM crops have fewer nutrients

高二英语阅读理解简单题查看答案及解析

----Is your father a teacher now?

----No, but he 　　　　　 . He taught English for 10 years.

A. used to be　　　　　　 B. used to

C. used to do　　　　　 D. was used to

高二英语单项填空中等难度题查看答案及解析

Is it, in your opinion, possible________new measures will be taken to improve the terrible traffic?

A. whether        B. that          C. when        D. what

高二英语单项填空中等难度题查看答案及解析

The US space agency NASA is looking for people to go to Mars, and stay there. This attractive career is for people who want a huge change of scenery and planet. The project is called the Hundred Years Starship, which aims to colonize (开拓殖民地) other lands such as the red planet Mars.

Settlers would travel to the red planet and live there forever. NASA says it would be too expensive to bring humans back to Earth. The space agency can afford, however, to send supplies to the astronaut pioneers from Earth. Astronauts would be landed on the planet's surface and would never be able to return home due to the cost.

NASA has started the project with $1.6 million, and hopes to attract investment from space-living billionaires. Google co-founder Larry Page told NASA he would be interested if the cost of a one-way ticket can go down from $10 billion to $2 billion.

The journey to Mars could take 4 months. Setting on the red planet would be extremely dangerous, especially given the freezing temperatures there. The thin atmosphere would be another problem as it is mostly carbon dioxide, so oxygen supplies are a must. A director in NASA said that he believed the trip might start with visiting Mars's moons first. He claimed that humans could be on Mars's moons by 2030.

Many scientists think colonizing space is absolutely necessary. Steven Hawking believes we must move to other planets to survive as a species. He said: “Once we spread out into space and establish independent colonies, our future should be safe.” Scientists Dirk' Schulze-Makuch and Paul Davies also call it a “desirable goal”, though there surely are huge risks to explore new lands.

1.Which of the following is TRUE about the Hundred Years Starship?

A．It has cost NASA around $10 billion.

B．It is expected to be conducted on Mars in 2030.

C．It aims to explore new lands in the universe.

D．It is a project first raise by Steven Hawking.

2.We can infer from the passage that Google co-founder Larry Page _______.

A．used to be an astronaut                  B．is no longer rich now

C．is a fan of space travel                    D．is a generous man

3.What would be the best title for the passage?

A．One-way trip to Mars

B．Mars's another moon is found.

C．Human landing on Mars.

D．NASA's first cooperation with Google.

高二英语阅读理解中等难度题查看答案及解析

Measures have been taken to prevent the accidents, but much _____ for more improvement.

高二英语单项填空中等难度题查看答案及解析

——Why not stop for a break now?

—— _____ .We have been busy working all day and all of us are tired.

A. I couldn’t agree more                        B. That’s all right

C. We’d better not.                            D. You’re really right.

高二英语单项填空中等难度题查看答案及解析

Action must be taken to prevent that factory from ______ heavy smoke into the air.

A. giving off       B. putting away       C. escaping from     D. dealing with

高二英语单项填空简单题查看答案及解析