Scientists have obtained more evidence ________ plastic is finding its way into the human body.
A.what B.that C.which D.where
高三英语单项填空中等难度题
Scientists have obtained more evidence ________ plastic is finding its way into the human body.
A.what B.that C.which D.where
高三英语单项填空中等难度题查看答案及解析
Evidence obtained from observation and experiment is often used to ________ a scientific theory.
A.confirm B.claim
C.conclude D.calculate
高三英语单项填空中等难度题查看答案及解析
Scientists have produced new evidence suggesting eating lots of red and processed meat damages health.They found big meat eaters had a raised risk of death from all causes over a 10-year period.In contrast, a higher intake of white meat was associated with a slightly reduced risk of death over the same period.
The US study, based on more than 500,000 people, found those whose diet contained the highest proportion (比例) of red or processed meat had a higher overall risk of death, and specifically a higher risk of cancer and heart disease than those who ate the least.
People eating the most meat were eating about 160g of red or processed meat per day— approximately a 6oz steak.Those who ate the least were only getting about 25g per day— approximately a small piece of bacon.Just the opposite, those who ate the highest proportion of white meat had a lower risk of overall death, and a lower risk of fatal cancer or heart disease than those who ate the lowest proportion.
Meat is a major source of saturated (饱和的) fat, which has been associated with breast and colorectal cancer.In addition, lower meat intake has been linked to a reduction in risk factors for heart disease, including lower blood pressure and cholesterol (胆固醇) levels.The latest study adds to a growing body of research linking high red and processed meat consumption to an increased risk of ill health.Ed Yong, of the charity Cancer Research UK, said, “Evidence from large studies tells us that cutting down on processed food, such as bacon or burgers, can reduce the risk of dying from cancer and other diseases.”
Dr Barry Popkin of the University of North Carolina stressed there were health benefits from eating some red meat.But he added: “The need is for a major reduction in total meat intake, an even larger reduction in processed meat and other highly processed and salted animal source food products and a reduction in total saturated fat.” Dr Mark Wahlqvist, a nutrition expert from Australia, said eating small amounts of red meat—around 30g a day—provided a good source of key nutrients.He said, “Fresh, lean red meat of these amounts is likely to be of more benefit than harm.”
1.According to the passage, we know ______.
A. big meat eaters eat a 6oz steak per day
B. big meat eaters have heart disease ten years earlier
C. people eating more meat will suffer from a heart attack
D. people eating more red meat have a higher risk of death
2.Processed meat is a kind of ______.
A. red meat
B. white meat
C. vegetable with a similar taste of meat
D. meat prepared by producers
3.According to the passage, how should we eat red meat in a healthy way?
A. We should eat red meat as we like.
B. We should eat proper amount of red meat per day.
C. We should reduce the amount of fresh, red lean meat.
D. We should completely cut out red meat from our diet.
4.What does the passage mainly talk about?
A. Too much red meat consumption contributes to ill health.
B. A well-balanced diet accounts for a healthy life.
C. A higher intake of white meat brings benefits.
D. Red meat contains saturated fat.
高三英语阅读理解中等难度题查看答案及解析
From facts, scientists have_______ that more energy is being absorbed from the sun, throwing the earth’s energy “out of balance”.
A.confirmed | B.concluded | C.concentrated | D.centered |
高三英语单项填空简单题查看答案及解析
Global warming could make humans shorter. Scientists claim to have found evidence that it caused the world's first horses 1. (shrink) nearly 50 million years ago. In fact,a team from the universities of Florida and Nebreaks says 2. has found a link between the Earth heating up and the size of mammals-homes,during the last time the world heated up. The scientists used fossils to follow the evolution of homes from their earliest 3. (appear) 56 million years ago. As temperatures went up.their size went 4. . The scientists say that the current warming could have the same effect 5. mammals and could even make humans 6. (small).“Horses started out small,about the size of a small dog. What's 7. (surprise)is that after they first appeared,they then became even smaller and then dramatically increased in size, and that8.(exact)corresponds to the global warming event, followed by cooling.”"It had been known that mammals 9. small during the last warm time, 10. we hadn't realized that temperature specifically was driving the evolution of body size”Dr. Bloch said in the "Science”journal.
高三英语语法填空简单题查看答案及解析
From facts, scientists have ________that more energy is being absorbed from the sun, throwing the earth’s energy “out of balance”.
A.confirmed | B.concluded | C.concentrated | D.centred |
高三英语单项填空中等难度题查看答案及解析
From facts, scientists have ___________ that more energy is being absorbed from the sun, throwing the earth’s energy “out of balance”.
A. confirmed B. concluded C. concentrated D. centred
高三英语单项填空中等难度题查看答案及解析
Scientists have discovered amazing evidence showing how the human body rebuilds _______ while we sleep.
A. us B. ourselves C. it D. itself
高三英语单项填空中等难度题查看答案及解析
NASA scientists have found evidence of flowing water on Mars. This opens up the possibility of___ and wonders we can’t begin to imagine. The____undoubtedly is an astonishing achievement.
We may be excited by the thought of living things on another ______, but we seem to have lost _______in our own. In the past four decades, the world has____50% of its vertebrate( 脊 椎 )wildlife. But across the latter half of this period, there has been a steep___ in media coverage (报道)of the subject.
Think of what would change if we valued_____ on the earth as much as we value the possibility water on Mars._____ 3% of the water on this planet is fresh and of that, two-thirds is frozen. Yet we lay waste to the ___part. Sixty percent of the water used in farming is____by careless irrigation. Rivers, lakes and aquifers ( 地 下 蓄 水 层 )are sucked dry, while what remains is often so bad that it____the lives of those who drink it. As for salty water, which so______us when apparently detected on Mars, however, on Earth, we express our___ by destroying it. A new report suggests fish numbers have halved since 1970. Coral reefs are under such___ that most could be gone by 2050.
A couple of weeks ago, I launched a column focusing on extreme consumption, and___ suggestions. They have flooded in. Here are just a few of the _____:wigs(假发)for babies, to allow “baby girls with little or no ___at all the opportunity to have a beautifully realistic hair style”; The iPotty, which _____little children to keep playing while toilet training; a smartphone for dogs to take pictures of themselves....
As clever new ways of wasting stuff are continually___ , we become more and more used to the___ consumption of the world’s precious resources. Isn’t it time for us to have second thoughts about our lifestyle?
1.A.peace B.trust C.life D.danger
2.A.appearance B.discovery C.performance D.operation
3.A.planet B.stage C.level D.island
4.A.courage B.hope C.pride D.interest
5.A.spread B.lost C.ignored D.found
6.A.climb B.turn C.increase D.decline
7.A.water B.plants C.animals D.air
8.A.Often B.Only C.Even D.Last
9.A.private B.public C.unclear D.accessible
10.A.checked B.chosen C.wasted D.polluted
11.A.saves B.threatens C.enriches D.changes
12.A.interests B.satisfies C.frightens D.terrifies
13.A.complaint B.doubt C.appreciation D.surprise
14.A.pressure B.control C.guidance D.attention
15.A.made B.considered C.invited D.followed
16.A.benefits B.reasons C.features D.products
17.A.time B.hair C.help D.knowledge
18.A.allows B.promises C.persuades D.advises
19.A.criticized B.reported C.replaced D.created
20.A.expensive B.limited C.pointless D.stable
高三英语完形填空中等难度题查看答案及解析
(2013·浙江温州二模)Scientists have found evidence ________ global warming caused the world's first horses to become smaller nearly 50 million years ago.
A.what B.that
C.which D.whether
高三英语单项填空中等难度题查看答案及解析