-
A desert is a beautiful land of silence and space. The sun shines, the wind blows, and time and space seem endless. Nothing is soft. The sand and rocks are hard, and many of the plants even have hard needles instead of leaves.
The size and location of the world's deserts are always changing. Over millions of years, as climates change and mountains rise, new dry and wet areas develop. But within the last 100 years, deserts have been growing at a frightening speed. This is partly because of natural changes, but the greatest makers are humans.
Humans can make deserts, but humans can also prevent their growth. Mauritania is planting a similar wall around Nouakchott, the capital. Iran puts a thin covering of oil on sandy areas and plants trees. The oil keeps the water and small trees in the land, and men on motorcycles keep the sheep and goats away. The USSR and India are building long canals to bring water to desert areas.
1.In this passage, the underlined word “needles” refers to ________.
A．small, thin pieces of steel
B．long, thin pieces of branches
C．thin, hard, pointed leaf
D．small, thin pieces of sticks
2.Which of the following is NOT true?
A．The greatest desert makers are human beings.
B．There aren't any living things in the deserts.
C．Deserts have been changing quickly.
D．The size of the deserts is always growing.
3.People in some countries are fighting a battle against ________.
A．the growth of deserts
B．desert climate
C．natural changes
D．the disappearance of desert
4.What does the author want to tell us?
A．Deserts are lands of hardness, silence and space.
B．The deserts of the world are changing from time to time.
C．Man is to take measures to control the growth of deserts.
D．Deserts have grown at a fast pace in the past 10 years.
高二英语阅读理解中等难度题查看答案及解析
-
Space is a dangerous place, not only because of meteors (流星 ) but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is essential for plants to make the food which we eat. Heat, too, makes our environment endurable（可忍受的）. Various kinds of rays come through the air from outer space, but enormous quantities of radiation（辐射） from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.
Radiation is the greatest known danger to explorers in space. The unit of radiation is called "rem". Scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage - a person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will no be discovered until the birth of abnormal children or even grandchildren.
Missions of the Apollo flights have had to cross belts of high amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.
1. According to the first paragraph, the atmosphere is essential to man in that ____.
A. it protects him against the harmful rays from space
B. it provides sufficient light for plant growth
C. it supplies the heat necessary for human survival
D. it screens off the falling meteors
2. We know from the passage that ____.
A. exposure to even tiny amounts of radiation is deadly
B. the effect of exposure to radiation is slow in coming
C. radiation is avoidable in space exploration
D. astronauts in spacesuits needn't worry about radiation damage
3. The harm radiation has done to the Apollo crew members ____
A. is significant B. seems overestimated
C. is enormous D. remains unknown
4. It can be inferred from the passage that ____.
A. the Apollo mission was very successful
B. protection from space radiation is no easy job
C. astronauts will have deformed children or grandchildren
D. radiation is not a threat to well-protected space explorers
45. The best title for this passage would be ____.
A. The Atmosphere and Our Environment B. Research on Radiation
C. Effects of Space Radiation D. Importance of Protection Against Radiation
高二英语阅读理解简单题查看答案及解析
-
Space is a dangerous place, not only because of meteors (流星) but also because of rays from the sun and other stars. The atmosphere again acts as our protective blanket on earth. Light gets through, and this is necessary for plants to make the food that we eat. Heat, too, makes our environment endurable. Various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. As soon as men leave the atmosphere they are exposed to this radiation but their spacesuits or the walls of their spacecraft, if they are inside, do prevent a lot of radiation damage.
Radiation is the greatest known danger to explorers in space, The unit of radiation is called “rem” Scientists have reason to think that a man can put up with far more radiation than 0.1rem without being damaged; the figure of 60 rems has been agreed on. The trouble is that it is extremely difficult to be sure about radiation damage. A person may feel perfectly well, but the cells of his or her sex organs may be damaged, and this will not be discovered until the birth of deformed children or even grandchildren. Missions of the Apollo flights have had to cross belts of high radiation and , during the outward and return journeys, the Apollo crew accumulated(积累) a large amount of rems. So far, no dangerous amounts of radiation have been reported, but the Apollo missions have been quite short. We simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. Drugs might help to decrease the damage done by radiation, but no really effective ones have been found so far.
1.In which way is the atmosphere necessary to man according to the first paragraph?
A. It screens off the falling meteors.
B. It provides enough light for plants to grow.
C. It supplies the heat necessary for human survival.
D. It protects him against the harmful rays from space.
2.We know from the passage that .
A. exposure to even tiny amount of radiation is fatal( 致命的)
B. the effect of exposure to radiation is slow in coming
C. radiation is avoidable in space exploration
D. astronauts in spacesuits needn’t worry about radiation damage
3.The underlined word “deformed” probably means .
A. badly-shaped B. weak
C. naturally-grown D. ugly
4.It can be inferred from the passage that .
A. the Apollo mission was very successful
B. astronauts will have deformed children or grandchildren
C. protection from space radiation is no eas
y jobD. radiation is not a threat to well-protected space explorers
高二英语阅读理解中等难度题查看答案及解析
-
Perhaps the beautiful beach is the island’s main ______. It is always full of tourists.
A. land B. visit C. attraction D. tour
高二英语单项填空简单题查看答案及解析
-
. As a result of destroying the forests, a large ___ _ of desert
___ covered the land.
A.number; has B.quantity; has C.number; have D.quantity; have
高二英语单项填空简单题查看答案及解析
-
As a result of destroying the forests, large ____ of desert ____ covered the land.
A．number; has
B．quantities; has
C．number; have
D．quantities; have
高二英语单项填空简单题查看答案及解析
-
As a result of destroying the forests, _____ of desert _____ covered the land.
A. a large number; has B. large quantities; has
C. a large quantity; has D. a great deal; have
高二英语单项填空简单题查看答案及解析
-
Once an Arab was traveling in the desert. When the sun went down in the west, he stopped and _36_ his tent then, made a fire and have a _37_ meal. When night fell, he_38_ down to sleep.
He had_39_ fallen asleep when he felt a soft _40_ on his elbow(手肘). He woke up to find that his camel had put his head inside the tent. The camel said: “Would you please let me keep my head in the tent to get warm? It is so cold outside. I will not take up too much 41 .”
The Arab was a 42 man, “All right, do as you 43 .” he said. Then he turned on his _44_ and went back to sleep.
It wasn’t long 45 he felt a push on his shoulder. It was the camel again. “Dear master,” the camel said, “my head is quite warm now, but my neck is still cold. Do you mind 46 I keep it inside the tent, too?”
“ _47_ .” the man said. But this time he felt a bit 48 , as camel had such a long neck.
No sooner had he shut his eyes 49 he got a harder push in his side. This time the camel said, “will you please allow me to bring my front legs inside and warm then a little?”
The Arab_ 50_ over to one side of the tent. He made _51_ as small as he could. It was not _52_ comfortable, and sleep was now out of 53 .Soon after that the camel gave his a rough push and said, “The tent is too small for the two of us. 54 , my two hind legs are still left in the cold. It is only_55_ that you should leave the tent wholly to me.” And with that, the camel kicked the poor man out.
1. A．built B．made C．put up D．set
2. A．simple B．rich C．excellent D．ordinary
3. A．laid B．lay C．lied D．went
4. A．seldom B．not C．almost D．hardly
5. A．touch B．beat C．kick D．bite
6. A．place B．tent C．room D．blanket
7. A．hard-hearted B．kind-hearted C．absent-mined D．careless
8. A．please B．willing C．are like D．want
9. A．light B．head C．arm D．side
10. A．after B．before C．since D．then
11. A．whether B．as C．that D．if
12. A．Yes, of course B．No, not at all
C．Don’t, please D．No, you can
13. A．crowded B．comfortable C．warmer D．narrower
14. A．than B．then C．when D．after
15. A．went B．walked C．climbed D．moved
16. A．the tent. B．himself C．room D．ground
17. A．very B．much C．a bit D．a little
18. A．question B．the question C．quite possible D．possibility
19. A．Except B．Besides C．After all D．But
20. A．fair B．wrong C．satisfied D．right
高二英语完型填空中等难度题查看答案及解析
-
What makes the space shuttle________is that it takes off like a rocket but lands like an airplane．
A. exceptional B．strange C．unique D．rare
高二英语简单题查看答案及解析
-
Venice is one of the most beautiful cities of the world. Venice is a cultural and tourist center and is famous for its museums, architecture, cityscape and world of art.
Only about 25 % of Venice’s 280, 000 people live in the historical center of the city. 1. The main method of transportation between the islands is by taking boats that travel up and down the city’s many canals. The main waterway is the Grand Canal, which winds through the heart of Venice. Hundreds of bridges connect the island.
2. The city’s most famous church, Saint Mark’s Basilica, and the Doge’s Palace which was the home of Venice’s rulers for hundreds of years, are the main attractions of the piazza. The square is a famous tourist attraction surrounded by cafes and vendor(大排档，小贩).
East of the historical center on the outer part of the lagoon (环礁湖) is Lido, a 10km long sandy island. 3. The Venice Film Festival is one of the major annual film events that take place there.
The location of the city at sea level and global warming have caused many problems for Venice. 4. From November to February they cause a situation in which sea level rises up to one and a half meters and cover many of Venice’s famous areas.
Salt water from the sea has damaged the foundations of many buildings and constant repairs are necessary. 5. Industries and tourism have steadily reduced the level of ground water in Venice, making foundations of building unstable.
A. Over the centuries the Mediterranean town has been regularly flooded by tides.
B. The central location of Venice is the Piazza San Marco or Saint Mark’s Square.
C. It attracts thousands of beach--goers throughout the summer holidays.
D. Water gets into the buildings, and destroys the walls.
E. The cost of living is also lower, in Venice.
F. The rest live on the mainland.
G. The city is full of tourists.
高二英语七选五中等难度题查看答案及解析
y job