网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
There（）three plants in the corners of the room.
Ais
Bare
Chave
参考答案
参考解析
略
更多 “There（）three plants in the corners of the room.AisBareChave” 相关考题
考题
Thomas is afraid of the dark, () he sleeps with a light on in his room.
A、thereforeB、becauseC、howeverD、then
考题
()that you have no objection,we will have the meeting in your room.
A、IfB、To be providedC、Provided Except
考题
What a ________ smell! Open the window and air the room.
A、disgustingB、pleasingC、powerfulD、disturbing
考题
he had wonderful childhood, _____with his mother to all corners of the wordA. travelB. to travelC. traveledD. traveling
考题
There are ( )and ( )in the room.
A、three radios/ two pianoesB、hundreds of photos/ thousands of tomatosC、two radios/ many photosD、two photos/ three radioes
考题
He was so()in his work that he didn ’t notice me entering the room.
A、concentratedB、focusedC、absorbedD、attracted
考题
AWhy do plants grow in some places and not in others? Why does some land have so much growing on it，while other land has almost no plants growing on it at all?To grow plants need several things． One is warmth． In very cold places almost nothing grows． Plants also need water． In very dry parts of the earth only a few unusual plants can grow． That's why dry deserts everywhere are almost not covered by trees or grass．Plants must also have a place in which to f，ut down their roots and grow． They find it diffi-culr to grow on hard land． The town is built on hard land． The plants here have only the soil found between the cracks of the stones Io grow in．Another thing plants must have before they can grow is food．Whar will happen if we try to make things grow on the sandy beach? A few plants，such as beach grass，will grow in sand，L ut most plants won-t． Even if the weather is warm enough．and we water the plants each day． Many of them will die because the sand on this beach has al-most no food for plants．( )21． According to the passage，plants need _________ things to grow well．A． twoB． threeC． fourD． five
考题
24． The reason why most plants can’t grow on the sandy beach is thatA． there isn't enough sunlightB． there is too much waterC． it is too crowded thereD． it has little food for plants
考题
Cracks may be prevented from developing at the corners of welded plating inserts by ______.A.squaring the cornersB.rounding the cornersC.plug welding the cornersD.slot welding the corners
考题
Large pillars and corners may_____A.make sound rich and full.
B.be cures for sound problems.
C.be sources of sound problems.
D.function as effectively as clouds.
考题
共用题干
“Salty” Rice Plant Boosts HarvestsBritish scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more.Tim Flowers and Tony Yeo,from Sussex University's School of Biological Sciences,have spent several years researching how crops,such as rice,could be made to grow in water that has become salty.The pair have recently begun a three-year programme,funded by the Biotechnology and Biological Sciences Research Council,to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops,starting with rice.It is estimated that each year more than 10m hectares（公顷）of agricultural land are lost because salt gets into the soil and stunts（妨碍生长）plants. The problem is caused by several factors. In the tropics , mangroves（红树林）that create swamps（沼泽）and traditionally formed barriers to sea water have been cut down .In the Mediterranean,a series of droughts have caused the water table to drop,allowing sea water to seep（渗透）in. In Latin America , irrigation often causes problems when water is evaporated（蒸发）by the heat , leaving salt deposits behind.Excess salt then enters the plants and prevents them functioning normally.Heavy concentrations of minerals in the plants stop them drawing up the water they need to survive.To overcome these problems,Flowers and Yeo decided to breed rice plants that take in very little salt and store what they do absorb in cells that do not affect the plants' growth.They have started to breed these characteristics into a new rice crop,but it will take about eight harvests before the resulting seeds are ready to be considered for commercial use.Once the characteristics for surviving salty soil are known,Flowers and Yeo will try to breed the appropriate genes into all manners of crops and plants.Land that has been abandoned to na- ture will then be able to bloom again,providing much needed food in the poorer countries of the world. The attitude of the author towards the research project is______.A: positiveB: negativeC: suspiciousD: indifferent
考题
共用题干
“Salty” Rice Plant Boosts HarvestsBritish scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more.Tim Flowers and Tony Yeo,from Sussex University's School of Biological Sciences,have spent several years researching how crops,such as rice,could be made to grow in water that has become salty.The pair have recently begun a three-year programme,funded by the Biotechnology and Biological Sciences Research Council,to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops,starting with rice.It is estimated that each year more than 10m hectares（公顷）of agricultural land are lost because salt gets into the soil and stunts（妨碍生长）plants. The problem is caused by several factors. In the tropics , mangroves（红树林）that create swamps（沼泽）and traditionally formed barriers to sea water have been cut down .In the Mediterranean,a series of droughts have caused the water table to drop,allowing sea water to seep（渗透）in. In Latin America , irrigation often causes problems when water is evaporated（蒸发）by the heat , leaving salt deposits behind.Excess salt then enters the plants and prevents them functioning normally.Heavy concentrations of minerals in the plants stop them drawing up the water they need to survive.To overcome these problems,Flowers and Yeo decided to breed rice plants that take in very little salt and store what they do absorb in cells that do not affect the plants' growth.They have started to breed these characteristics into a new rice crop,but it will take about eight harvests before the resulting seeds are ready to be considered for commercial use.Once the characteristics for surviving salty soil are known,Flowers and Yeo will try to breed the appropriate genes into all manners of crops and plants.Land that has been abandoned to na- ture will then be able to bloom again,providing much needed food in the poorer countries of the world. Flowers and Yeo have started a program______.A: to find ways to prevent water pollutionB: to identify genes that promote growth in salty soilC: to breed rice plants that taste saltyD: to find ways to remove excessive salt from soil
考题
多选题Consider each of the choices separately and select all that apply. Which of these can be inferred from the fact that the French built orangeries for certain tropical plants?AGreenhouses may be used to keep plants at a moderate temperatureBThe climate of France is unsuited to growing tropical plants outdoors.CLouis ⅩⅣ was a frequent and enthusiastic traveler to Africa and Asia
考题
问答题Practice 3 At first, as he adjusted pumps and checked temperatures, Aaron Boucher looked like any technician in the control room of an electrical plant. Then he rushed to the window and scanned the sky, to check his fuel supply. Mr. Boucher was battling clouds, timing the operations of his power plant to get the most out of patchy sunshine. It is a skill that may soon be in greater demand, for the world appears to be on the verge of a boom in a little-known but promising type of solar power. It is not the kind that features shiny panels bolted to the roofs of houses. This type involves covering acres of desert with mirrors that focus intense sunlight on a fluid, heating it enough to make steam. The steam turns a turbine and generates electricity. The technology is not new, but it is suddenly in high demand. As prices rise for fossil fuels and worries grow about their contribution to global warming, solar thermal plants are being viewed as a renewable power source with huge potential. After a decade of no activity, two prototype solar thermal plants were recently opened in the United States, with a capacity that could power several big hotels, neon included, on the Las Vegas Strip, about 20 miles north of here. Another 10 power plants are in advanced planning in California, Arizona and Nevada. On sunny afternoons, those 10 plants would produce as much electricity as three nuclear reactors, but they can be built in as little as two years, compared with a decade or longer for a nuclear plant. Some of the new plants will feature systems that allow them to store heat and generate electricity for hours after sunset. At Nevada Solar One the other day, Mr. Boucher, 30, ran the computerized control room. He was trying to produce as much electricity as possible while saving heat to tide the plant over as clouds cast episodic shadows on the solar array. “I’ve been fighting it all day,” he said. Imperceptibly, in the dusty wind of the high desert, 182,000 mirrors moved from east to west, tracking the sun across the sky.
考题
单选题How should we understand the richness of these three civilizations according to the passage?A
It meant people’s ability to produce commodities.B
It meant people’s ability to domesticate plants and animals.C
In population it meant the ability to raise a ruling class.D
In population it meant the ability to draw other peoples to the area.
考题
单选题Cracks may be prevented from developing at the corners of welded plating inserts by（）.A
squaring the cornersB
rounding the cornersC
plug welding the cornersD
slot welding the corners
考题
单选题The most common forms of main drive used on deck auxiliaries are （）.A
steam plants, electric motors and compressed airB
diesel engine, hydraulic machinery and compressed airC
steam plants, electric motors and hydraulic machineryD
diesel engines, steam plants and hydraulic machinery
考题
单选题There（）three plants in the corners of the room.A
isB
areC
have
热门标签
最新试卷