Earth is a rocky planet _______ liquid water,...

Earth is a rocky planet_____ liquid water, which is necessary for life, can exist.

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

高二英语单项填空简单题查看答案及解析

Earth is a rocky planet _______ liquid water, which is necessary for life, can exist.

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

高二英语单项填空简单题查看答案及解析

The oceans are unique to our planet. No other planet in our solar system has liquid water. The oceans cover about 70% of the earth's surface. They contain about 97% of the earth's water supply. Life on earth originated in the seas. The oceans continue to be home to an incredible number of plants and animals.

We know very little about the oceans. Because they are so deep and dark, they are hard to study. But scientists are discovering new strange creatures all the time. We are learning more by using satellites to look at the oceans' surfaces and by using buoys (航标) to measure temperature and saltiness. Special vehicles can now travel deep into the dark oceans to see what mysteries can be discovered.

More of the sun's heat is assimilated by water along the equator than at the poles. This means the water at the equator is warmer than water at the poles. These different water temperatures cause the water in the oceans to move. This is called an ocean current.

The air above ocean currents also moves. The warm or cold ocean air moves over the land as wind. Oceans are also a really important part of the water cycle. Evaporation (蒸发) from oceans creates most of the world's rainfall. Plants on land need the rain to absorb nutrients from the soil.

The oceans are also home to all kinds of sea life. These include fish, whales, dolphins, octopi, lobsters, crabs and shrimps. There are also jellyfish and starfish. Many kinds of plants, such as plankton, kelp and sea grass are part of the "forest of the seafloor."

Carbon dioxide in-oxygen out! Oceans help to capture and store carbon dioxide(C02). They are the largest natural "carbon sinks" in the world. Oceans trap about 1/4 of the CO2 that humans put into the air. Oceans also release oxygen. Half of the world's oxygen is produced by these tiny plants!

1.What does the author think of oceans?

A. They are amazing.　　 B. They are common.

C. They are boundless.　　 D. They are unimaginable.

【小题2 To know more about the mysterious oceans, ________.

A. scientists use satellites in the oceans

B. scientists are discovering new strange creatures

C. scientists are using satellites to monitor the depth of oceans

D. scientists are introducing scientific equipment in the research

2.What does the underlined word "assimilated" mean in the passage?

A. Taken in.　 　 B. Given off.

C. Cut down.　　 D. Held back.

3.It can be inferred from the passage that ________.

A. oceans produce much carbon dioxide

B. it is not safe to live by the oceans

C. oceans provide humans with rich resources

D. humans can only depend on oceans for water

高二英语阅读理解简单题查看答案及解析

Our warming planet is expected to face serious water crisis（危机）in the coming decades — which means each nation’s natural resource will be more important than ever.

1.According to the statistics,what is the world average of freshwater resource per person?

A. 244,973 cubic kilometers　　 B. 241 cubic kilometers

C. 3,642 cubic kilometers　　 D. 6,122 cubic kilometers

2.Which country or region has the most freshwater resource per year?

A. Guyana　　 B. Brazil

C. Iceland　　 D. China

3.Which country or region appears twice on the top 5 lists?

A. Bhutan　　 B. Seychelles

C. Canada　　 D. Suriname

高二英语阅读理解中等难度题查看答案及解析

Our warming planet is expected to face serious water crisis（危机）in the coming decades — which means each nation’s natural resource will be more important than ever.

1.Which country or region has the most freshwater resource per year?

A. Guyana　　　　　　　 B. Brazil　　　　　　　　　 C. Iceland　　　　　　 D. China

2.According to the statistics, what is the world average of freshwater resource per person?

A. 244,973 cubic kilometers

B. 241 cubic kilometers

C. 3,642 cubic kilometers

D. 6,122 cubic kilometers

3.Which country or region appears twice on the top 5 lists?

A. Bhutan　　　　　　　 B. Seychelles

C. Canada　　　　　　 D. Suriname

高二英语阅读理解中等难度题查看答案及解析

Titan is believed to be the only body in _____ solar system other than the Earth with liquid on ______ surface.

A. the; /               B. /; the               C. /; /             D. the; the

高二英语单项填空中等难度题查看答案及解析

The earth is not the only body that travels around the sun. With it are eight other planets, fellow members of the sun’s family.

Two of them, Mercury (水星) and Venus, are nearer while the other six, namely Mars, Jupiter, Saturn, Uranus, Neptune and Pluto, also in their given order from the sun, are farther from the sun than the earth is. The farther they are, the longer trips they make around the sun. People noticed long ago that these traveling bodies moved around in the sky in definite paths. It is a force called gravity that holds them in their paths.

We know that every little bit of matter in the universe pulls upon every other bit of matter. The pull between two bodies is proportional (成比例的) to the product of their masses. Because the sun is so large the pull between the sun and the planets are thus great. If it were not for this pull, the planets would fly off into space. In the same way there exists a pull between the earth and the moon, which keeps the moon traveling in its orbit around our planet, the earth. Gravity holds you to its surface, and pulls back to it the ball which you throw into the air. Of course the ball also pulls on the larger earth but the earth is so much larger that the pull is not noticed.

Now remember that large bodies exert a greater pull than smaller ones which contain less material. But each object in the universe, no matter how small, pulls on all other objects to some degree.

1.There are ________ that travel around the sun in the sun’s family.

A．nine planets                           B．eight planets

C．one star and ten planets                  D．the earth and the sun

2.Which two planets make the longest trips around the sun among all the planets in the solar system?

A．Mercury and Venus.                     B．Neptune and Pluto.

C．Saturn and Uranus.                      D．Mars and Jupiter.

3.From the passage we can see__________

A．all the objects, big or small, must exert the same pull on one another

B．large objects exert the same pull on anybody as small objects

C．small objects exert the same on large ones

D．each object in the universe exerts a pull on all other objects

4.From the sentence “The pull between two bodies is proportional to the product of their masses.” We can infer that the pull between__________

A．the sun and the moon is greater than between the sun and the earth

B．the earth and the moon is greater than that between the sun and the earth

C．the sun and the earth is greater than that between the earth and the moon

D．the sun and the earth is the same as that between the earth and the moon

高二英语阅读理解中等难度题查看答案及解析

Is There Life on Earth?

There was great excitement on the planet of Venus(金星) this week. For the first time Venusian scientists managed to land a satellite on the planet Earth, and it has been sending back signals as well as photographs ever since.

The satellite was directed into an area known as Manhattan (named after the great Venusian astronomer Prof. Manhattan, who first discovered it with his telescope 20,000 light years ago).

Because of excellent weather conditions and extremely strong signals, Venusian

scientists were able to get valuable information as to feasibility (可行性) of a manned flying saucer (碟) landing on Earth. A press conference was held at the Venus Institute of Technology.

“We have come to the conclusion, based on last week’s satellite landing,” Prof. Zog said, “that there is no life on Earth.”

“How do you know this?” the science reporter of the Venus Evening Star asked.

“For one thing, Earth’s surface in the area of Manhattan is made up of solid concrete and nothing can grow there. For another, the atmosphere is filled with carbon monoxide (一氧化碳) and other deadly gases and nobody could possibly breathe the air and survive.”

“What does this mean as far as our flying saucer program is concerned?”

“We shall have to take our own oxygen with us, which means a much heavier flying saucer than originally planned.”

“Are there any other dangers that you discovered in your studies?”

“Take a look at this photo. You see this dark black cloud hovering(盘旋) over the surface of Earth? We call this the Consolidated Edison Belt. We don’t know what it is made of, but it could give us a lot of trouble and we shall have to make further tests before we send a Venus Being there.”

“Over here you will notice what seems to be a river, but the satellite findings indicate it is polluted and the water is unfit to drink. This means we shall have to carry our own water, which will add even greater weight to the saucer.”

“Sir, what are all those tiny black spots on the photographs?”

“We are not certain. They seem to be metal particles(粒子) that move along certain paths. They emit gases, make noise and keep crashing into each other. There are so many of these paths and so many metal particles that it is impossible to land a flying saucer without its being smashed by one”.

“What are those stalagmite(石笋) projections sticking up?”

“They are some of granite formations that give off light at night. Prof. Glom has named them skyscrapers since they seem to be scraping the skies. ”

“If all you say is true, won’t this set back the flying saucer program several years?”

“Yes, but we shall continue as soon as the Grubstart gives us the added funds.”

Prof. Zog, why are we spending billions and billions of zilches to land a flying saucer on Earth when there is no life there?

“Because if we Venusians can learn to breathe in an Earth atmosphere, then we can live anywhere.”

1.According to Prof. Zog, the Venusians will have to take their own oxygen with them when they carry out their flying saucer program because ________.

A. they need it on their way to the planet of earth

B. the earth’s atmosphere is filled with deadly gases

C. oxygen is far from enough in the area of Manhattan

D. there is no air on the planet of Earth

2.The “dark black cloud” in the 10th paragraph indicates ________.

A. the polluted air hovering over the surface of Earth

B. the mass of tiny drops of water floating above Earth

C. the mass of small things moving through the air

D. the dark clouds gathering before a storm breaks

3.The author wishes to call our attention to the fact that ________.

A. modern man has polluted his environment to such an extent that he may destroy himself if he carries on like this

B. there is no point in spending billions and billions of zilches to land a flying saucer on Earth

C. pollution has become so serious a problem on Earth that even Venusians find life there unbearable

D. it is difficult, if not altogether impossible, to land a manned flying saucer on Earth

4.The tone of this essay is ________.

A. hopeless and objective

B. serious and critical (批评的)

C. humorous and satirical (讽刺的)

D. sensitive and subjective

高二英语阅读理解中等难度题查看答案及解析

Stephen Hawking believes that the earth is unlikely to be the only planet ________ life has developed gradually.

A. whose           B. where           C. which           D. what

高二英语单项填空简单题查看答案及解析

阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式(不多于3个单词)。

1.（see）from outer space, Earth is a blue planet, due to the fact that the ocean covers over 70 percent of its surface. According to a new study published in the journal Science, the ocean plays a great role in 2.（slow）down global warming. 3.The New York Times reported, it is “4.important buffer（缓冲物）”.

The oceans can absorb 93 percent of the heat trapped by the greenhouse gases 5.humans release into the atmosphere. And the other 7 percent 6.（absorb)by the air, land and ice caps, according to the Guardian.

“If the ocean wasn’t absorbing as much heat, the surface of the land would heat up much 7. （fast） than it is right now,” said professor Malin L. Pinsky at Rutgers University in the US. “In fact, the ocean is saving us from rapid warming right now.”

However, the ocean itself, as Discover Magazine noted, is heating up 40 percent faster on average than the United Nations 8.（believe） five years ago. That means if the ocean temperatures increase 9.this speed, the high water temperatures “will kill off marine ecosystems, raise sea 10. (level) and make hurricanes more destructive （破坏性的）”, the Guardian reported.

高二英语语法填空简单题查看答案及解析