The health of garden plants depends on the soil _____ --the proper balance of mineral pieces, organic matter, air and water.
A. construction B. conservation
C. corporation D. composition.
高三英语单项填空简单题
The health of garden plants depends on the soil _____ --the proper balance of mineral pieces, organic matter, air and water.
A. construction B. conservation
C. corporation D. composition.
高三英语单项填空简单题查看答案及解析
语法填空
Enough sleep is important to health. The amount of sleep ______(need) depends on the age of the person and the conditions in ______ sleep takes place. The young may need more sleep than _____ old, but usually eight hours are enough for the health of grown-ups. Some can do with _____ than this amount,____ ___ others may need more. Every person knows his own need. _____ is then a matter of good judgment to satisfy his need. Sleep should always be enough to make one bring back his ______ (strong) and get ready for a day’s work.
Fresh air is necessary to sound sleep. So it is not ______ reason for some people to think that it is practicable to sleep in the open air. A bath at bedtime, ________ hot nor cool but of body temperature, may be helpful to sleep. Sleep-producing drug should never be taken except when ______ (suggest) by a doctor.
高三英语语法填空中等难度题查看答案及解析
信息匹配
A strong memory depends on the health and vitality of your brain．They say that you can’t teach an old new tricks, but when it comes to the brain, scientists have discovered that this old saying simply isn’t true．1. .
Give your brain a workout．Memory, like muscular strength, requires you to “use it or lose it”．The more you work out your brain, the better you’ll be able to process and remember information．2. .
Don’t skip the physical exercise．While mental exercise is important for brain health, that doesn’t mean you never need to break a sweat．Physical exercise helps your brain stay sharp．It increases oxygen to your brain and reduces the risk for disorders that lead to memory loss．
Get enough sleep．There is a big difference between the amount of sleep you can get by on and the amount you need to function at your best．3. .
Keep stress in check．Stress is one of the brain’s worst enemies．Over time, stress destroys brain cells．Studies have also linked stress to memory loss．
Have a laugh．4. That holds true for the brain and the memory, as well as the body．Unlike emotional responses, which are limited to specific areas of the brain, laughter engages multiple regions across the whole brain．
__5.__ Just as the body needs fuel, so does the brain．You probably already know that a diet based on fruits, vegetables, whole grains, “healthy” fats and lean protein will provide lots of health benefits, but such a diet can also improve memory．For brain health, though, it’s not just what you eat—it’s also what you don’t eat．
A．Eat a brain-boosting diet．
B．Play games with memory．
C．Laughter is the best medicine．
D．But oversleeping is not good for your brain．
E．Even skipping a few hours makes a difference!
F．You have to shake things up from time to time!
G．The human brain has an astonishing ability to adapt and change．
高三英语七选五中等难度题查看答案及解析
People planted trees on the waste hills_________ water and soil loss.
A. to decrease B. decreasing
C. decreased D. decrease
高三英语单项填空中等难度题查看答案及解析
—It ________ to plant trees and grass on the hillside.
—Yes. They help stop soil from being washed away.
A. makes sense B. makes money
C. makes a living D. makes a mistakes
高三英语单项填空中等难度题查看答案及解析
—It______________to plant trees and grass on the hillside.
—Yes. They help stop soil from being washed away.
A. makes sense B. makes money
C. makes a living D. makes a mistakes
高三英语单项填空中等难度题查看答案及解析
The health of millions could be at risk because medicinal plants are being used up.These plants are used to make traditional medicine，including drugs to fight cancer.“The loss of medicinal plants is a quiet disaster，”says Sara Oldfield，secretary general of the NGO Botanic Gardens Conservation International.
Most people worldwide (including 80 percent of all Africans)rely on herbal medicines(草药)which are got mostly from wild plants.But some 15,000 of the 50,000 medicinal species are under threat of dying out，according to a report from the international conversation group Plantlife.Shortages have been reported in China，India，Kenya，Nepal，Tanzania and Uganda.
Overharvesting does the most harm，though pollution and competition from invasive(侵略性的)species are both responsible.“Businessmen generally harvest medicinal plants，not caring about sustain ability，”the Plantlife report says.“Damage is serious partly because they have no idea of it，but it is mainly because such collection is unorganized.” Medicinal trees at risk include the Himalayan yew and the African cherry，which are used to treat some cancers.
The solution，says the report's author，Alan Hamilton，is to encourage local people to protect these plants.Ten projects studied by Plantlife in India，Pakistan，China，Nepal，Uganda and Kenya showed this method can succeed.In Uganda the project has kept a sustainable supply of lowcost cancer treatments，and in China a public run medicinal plant project has been created for the first time.
“Improving health，earning an income and keeping cultural traditions are important in encouraging people to protect medicinal plants，”says Hamilton.“You have to pay attention to what people are interested in.” Ghillean Prance，the former director of the Royal Botanic Gardens at Kew in London，agrees that medicinal plants are in need of protection.
“Not nearly enough is being done，”he told New Scientist.“We are destroying the very plants that are of most use to us.”
1.What is the passage mainly about?
A．The function of medicinal plants.
B．The importance of traditional medicine.
C．More and more people rely on herbal medicines.
D．The dangerous situation of medicinal plants and ways of protecting them.
2.Which of the following is TRUE according to the passage?
A．About 30% of medicinal species are at risk of dying out.
B．Medicinal plants are mainly used to treat cancers.
C．80% of African countries are reported to be short of medicinal plants.
D．The problem of the loss of medicinal plants appeared suddenly.
3.What contributes most to the loss of medicinal plants?
A．A lack of knowledge of sustainability.
B．Invasion by other species.
C．Environmental pollution.
D．Improper harvesting.
4.What is a useful method of protecting medicinal plants?
A．Improving people's health.
B．Letting people earn more.
C．Working together with the government.
D．Persuading the locals to protect them.
高三英语阅读理解中等难度题查看答案及解析
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。选项中有两项为多余选项。
A strong memory depends on the health and vitality （活力） of your brain. They say that you can’t teach an old dog new tricks, but when it comes to the brain, scientists have discovered that this old saying simply isn’t true. 1.
Give your brain a workout. Memory, like muscular strength, requires you to “use it or lose it”. The more you work out your brain, the better you’ll be able to process and remember information. 2.
Don’t skip the physical exercise. While mental exercise is important for brain health, that doesn’t mean you never need to break a sweat. Physical exercise helps your brain stay sharp. It increases oxygen to your brain and reduces the risk for disorders that lead to memory loss.
Get enough sleep. There is a big difference between the amount of sleep you can get by on and the amount you need to function at your best. 3.
Keep stress in check. Stress is one of the brain’s worst enemies. Over time, stress destroys brain cells. Studies have also linked stress to memory loss.
Have a laugh. 4. That holds true for the brain and the memory, as well as the body. Unlike emotional responses, which are limited to specific areas of the brain, laughter engages multiple regions across the whole brain.
5. Just as the body needs fuel, so does the brain. You probably already know that a diet based on fruits, vegetables, whole grains, “healthy” fats and lean protein will provide lots of health benefits, but such a diet can also improve memory. For brain health, though, it’s not just what you eat—it’s also what you don’t eat.
A. Eat a brain-boosting diet.
B. Play games with memory.
C. Laughter is the best medicine.
D. But oversleeping is not good for your brain.
E. Even skipping a few hours makes a difference!
F. You have to shake things up from time to time!
G. The human brain has an astonishing ability to adapt and change.
高三英语七选五中等难度题查看答案及解析
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。选项中有两项为多余选项。
A strong memory depends on the health and vitality （活力） of your brain. They say that you can’t teach an old dog new tricks, but when it comes to the brain, scientists have discovered that this old saying simply isn’t true. 1.
Give your brain a workout. Memory, like muscular strength, requires you to “use it or lose it”. The more you work out your brain, the better you’ll be able to process and remember information. 2.
Don’t skip the physical exercise. While mental exercise is important for brain health, that doesn’t mean you never need to break a sweat. Physical exercise helps your brain stay sharp. It increases oxygen to your brain and reduces the risk for disorders that lead to memory loss.
Get enough sleep. There is a big difference between the amount of sleep you can get by on and the amount you need to function at your best. 3.
Keep stress in check. Stress is one of the brain’s worst enemies. Over time, stress destroys brain cells. Studies have also linked stress to memory loss.
Have a laugh. 4. That holds true for the brain and the memory, as well as the body. Unlike emotional responses, which are limited to specific areas of the brain, laughter engages multiple regions across the whole brain.
5. Just as the body needs fuel, so does the brain. You probably already know that a diet based on fruits, vegetables, whole grains, “healthy” fats and lean protein will provide lots of health benefits, but such a diet can also improve memory. For brain health, though, it’s not just what you eat—it’s also what you don’t eat.
A. Eat a brain-boosting diet.
B. Play games with memory.
C. Laughter is the best medicine.
D. But oversleeping is not good for your brain.
E. Even skipping a few hours makes a difference!
F. You have to shake things up from time to time!
G. The human brain has an astonishing ability to adapt and change.
高三英语七选五中等难度题查看答案及解析
In the botanic garden we can find a（n）______of plants that range from tall trees to small flowers.
| A．species | B．group | C．amount | D．variety |
高三英语单项填空简单题查看答案及解析