Higher temperatures turning the large ice sheet to water would cause ______ rise in sea level worldwide and change ______ weather on earth.
| A．a; / | B．the; / | C．a; the | D．/; the |
高二英语单项填空简单题
Higher temperatures turning the large ice sheet to water would cause ______ rise in sea level worldwide and change ______ weather on earth.
| A．a; / | B．the; / | C．a; the | D．/; the |
高二英语单项填空简单题查看答案及解析
Underneath the Greenland ice sheet lies a body of water covering an area larger than West Virginia, and until just a few years ago, scientists had no idea that it existed.
First discovered in 2011, scientists now believe it covers some 27, 000 square miles and contains more than 100 billion tons of liquid water.
The melt-water reservoir (蓄水池) was discovered under the ice, in a south-eastern part of Greenland, by researchers from the University of Utah about two years ago. According to the BBC, at first the researchers expected to find waters stored in small spaces between the rocks. What they actually found was a massive reservoir of water trapped in the ice, kind of like the liquid in a snow-cone. Newser quotes lead study author Richard Forster saying, “we thought we had an understanding of how things work in Greenland, but here is this entire storage system of water we didn’t realize was there.”
OK, so snow water under the ice in Greenland; why is this a big deal? Well, researchers say it could provide new clues to understanding Greenland’s ice melts and sea level rise in general. Voice of America quotes Forster saying, “of the present sea level rise, the Greenland ice sheet is the largest contributor, and it is melting at record levels, so understanding the aquifer’s (地下蓄水层) capacity to store water from year to year is important, because it fills a major gap in the overall connection of melt-water runoff and sea levels.” According to researchers, the water is 15 to 60 feet beneath the surface and likely stays fluid because it’s covered by snow. They’re unsure how old the reservoir is or whether it flows into the ocean.
1.What is true about the water newly found in Greenland?
A. It is probably in the form of liquid. B. It is widely stored between the rocks.
C. It finally flows into the ocean. D. It came into being only a few years ago.
2.The discovery of water in Greenland is very important because ______.
A. it confirms scientists’ previous guess about the storage of water in Greenland
B. it throws new light on the relation between Greenland’s melt water and sea level rise
C. it provides information about the possible amount of water storage in Greenland
D. it solves the problem of the shortage of fresh water in the world for good
3.What will be the best title of the passage?
A. Ice Sheet in Greenland Melting at Alarming Speed
B. Greenland Ice Sheet Contributing to Rapid Sea Level Rise
C. Billions of Tons of Water Found under Greenland Ice Sheet
D. Scientists Predicting Massive Underground Water in Greenland
高二英语阅读理解中等难度题查看答案及解析
Evidence of a powerful volcano, which erupted under the ice sheet of West Antarctica around 325BC and might still be active now, __________ so far by British scientists.
A. confirmed B. has confirmed
C. is confirmed D. has been confirmed
高二英语单项填空困难题查看答案及解析
In washing this cloth, be sure to _______ the temperature of water.
A. allow for B. pay for C. account for D. answer for
高二英语单项填空简单题查看答案及解析
When such an organised group became too large for its members to travel together comfortably, it would ______.
| A．hurry up | B．split up | C．make up | D．pick up |
高二英语单项填空中等难度题查看答案及解析
A large population in the world have no _________ to clean drinking water.
A. way D. road C. access D. space
高二英语单项填空困难题查看答案及解析
When the weather turns warm, everyone wants to be in or around the water. Hanging out at the pool the beach on a hot day is a great way to beat the heat.
Most people don’t think much about water -but they should. For people between the ages of 5 and 24, drowning is the second cause of accidental death.
It doesn’t have to be that way, .By knowing how to stay safe and following a few simple guidelines, most water related accidents can be .
It’s a good idea to swim only in places that are watched over by a lifeguard. can predict changing ocean currents, sudden storms, or other dangers. In the event that something does go wrong, lifeguards are trained in techniques.
Swimming in an body of water(like a river, lake, or ocean) is different from swimming in a pool. You need more to handle the currents and other changing conditions in the open water.
If you do find yourself in a current, don’t panic and don’t fight the current. Try to swim parallel(平行) to the shore until you are able to the current, which is usually a narrow channel of water. try to make your way back to shore as you do so. If you’re to swim away from the current, stay calm and with the current. The current will usually ,then you can swim to shore.
a very good swimmer who tries to swim against a strong current will get worn out. If you’re going to in open water, better take lessons that provide you with tips on unexpected dangers.
Some areas with extremely strong currents are limits when it comes to swimming. Do your research so you know not to swim, and pay attention to any warning signs posted in the area.
1.A. pollution B. safety C. supply D. shortage
2.A. changing B. reasonable C. unknown D. leading
3.A. though B. besides C. therefore D. otherwise
4.A. ignored B. determined C. avoided D. delayed
5.A. Nobody B. Everybody C. Anybody D. Some body
6.A. hidden B. immediate C. obvious D. increased
7.A. medical B. teaching C. rescue D. managing
8.A. active B. attractive C. open D. empty
9.A. time B. energy C. money D. skill
10.A. flooded B. injured C. impressed D. caught
11.A. catch up withB. get out of C. take hold of D. keep away from
12.A. Eventually B. immediately C. Frequently D. Gradually
13.A. unwilling B. unable C. unlikely D. unfortunate
14.A. fight B. bargain C. compete D. float
15.A. set off B. slow down C. break out D. roll over
16.A. Yes B. So C. Also D. Even
17.A. swim B. surf C. dive D. relax
18.A. handling B. foreseeing C. reducing D. identifying
19.A. within B. above C. beyond D. below
20.A. why B. when C. where D. how
高二英语完形填空中等难度题查看答案及解析
1.The children’s age r___________from 8 to 15.
2.The factory turns out a large q___________ of paper products.
3.John often comes into c__________ with his boss.
4.He needs to f___________ more on his career.
5.We accepted the agreement without a_____________.
6.You must _____________ (道歉) to him for having kept him waiting so long.
7.What is your____________ (态度) towards the questions.
8.How did they _____________(反应)to your criticism?
9.The children were not to ____________(责备) for the accident.
10.I will never__________(原谅) him for what he has done.
高二英语单词拼写中等难度题查看答案及解析
When an ice cube melts, it creates a puddle (水坑). When an ice sheet (冰盖)melts, it raises sea levels. It sounds simple, but scientists have debated for decades whether both the Antarctic and Greenland ice sheets actually were shrinking, and how much that melting contributed to rising sea levels.
Now, a new study has provided the best evidence of how the polar ice sheets are responding to our warming world. In the study, an international team of scientists looked at 20 years of' data in the ice sheets collected by 10 satellite missions. The team's conclusion: The Greenland and Antarctic ice sheets both are losing ice overall. The researchers also found that between 1992 and 2011, melt water from those shrinking ice sheets caused sea levels to rise by about 11 millimeters.
Over the 19 years studied, the Greenland ice sheet lost 2.7 trillion metric tons of ice. The Antarctic ice sheet also shrank by about l.3 trillion metric tons. Previously, some scientists disagreed whether the Antarctic sheet, the largest mass of ice in the world, was shrinking or growing or neither.
While the Earth is warming overall, the effect of climate change varies from region to region. Over the last 15 years, for example, scientists have something disagreed over how climate change has affected the polar ice sheets. Many studies found that the sheets lost a lot of ice and that not enough snow fell on the sheets to compensate for the loss. But other studies found that the loss of ice was balanced by the gain in snowfall.
Richard Alley, a glacier scientist at Penn State University, said that many of those studies looked at different areas, and over different time periods. In addition, the studies didn't all use the satellite data in the same way. Those differences made, it difficult to compare the results.
The data in the new study matched time periods and areas. The study also combined measurements from kinds of satellites.
1.Why does the author use a common-sense phenomenon as the beginning?
A.To present the reason for ice sheet melting.
B.To show us the result of a scientific experiment.
C.To give a simple example to introduce the topic.
D.To present a common daily finding obvious to the readers.
2.The researchers reached their conclusion by_____.
A.analyzing the findings of former studies
B.observing the Antarctic and Greenland
C.referring to the data from satellites
D.making measurements in the Antarctic and Greenland
3.What does the underlined phrase "compensate for" in paragraph 4 refer to?
A.Cut down.
B.Lead to．
C.Bring about.
D.Make up for.
4.Which of the following might be the best conclusion for the passage?
A.Ice sheets are shrinking due to global warming.
B.People are suffering from climate change.
C.Rising sea levels makes people live in danger.
D.Shrinking ice has nothing to do with sea levels.
高二英语阅读理解中等难度题查看答案及解析
The workers will go on strike if the demands they ________ put forward are turned down.
A．could B．would
C．/ D．Had.
高二英语单项填空中等难度题查看答案及解析