DA team of scientists proved that seals had a...

D

A team of scientists proved that seals had a very good sense of hearing. These men trained blind seals to expect food when they heard sounds. The seals always began snapping(猛咬) when a strong signal was sounded.

It was proved that even a soft signal, a considerable distance away, could make these sea animals respond. That should make the fisherman who makes much noise while working, or talks loudly, start thinking.

The same team of scientists also trained seals to recognize different sounds. One bell-tone meant food ,two bell-tones meant no food. In the beginning, the seals made mistakes when the two bell-tones were sounded. They were given a light tap after each mistake. The seals were good learners. They easily learned to tell the difference between the sounds.

67.Why was it necessary to use blind seals? Because they______.

A. were unable to use sight for clues    B. had better hearing

C. were waiting to be fed             D. were the only animals to be found

68. To those seals strong signal meant_____.

A. snapping     B. nothing      C. food       D. a light tap

69. The article doesn’t say directly but suggests that fishermen usually think______.

A. seals have no good sense of hearing   B. seals have good sense of hearing

C. seals can only recognize bell sounds   D. seals can not hear soft or long distant sounds

70. Which title will be the best to suit the article?

A. Clever Seals                      B. Smart Learners

C. An Underwater School             D. An Unknown School

高三英语阅读理解简单题查看答案及解析

Are we alone in the universe? A team of scientists announced on January 6, 2015 that they had identified eight planets beyond our solar system, three or four of which orbit in their stars’ “Goldilocks Zone” --- the region where temperatures are not too hot or too cold for water, which is a necessary ingredient for life as we know it, to exist liquid form.This may be good news for people hoping that Earth is not the only inhabited world in the universe.

The scientists, led by Dr. Guilermo Torres of the Harvard-Smithsonian Center for Astrophysics, made the discoveries using data collected by the planet-seeking Kepler telescope.

NASA launched Kepler in 2009. Since then, the telescope has identified more than 1,000 planets outside of our solar system. Torres and his team analyzed the data about the eight newly discovered world to determine which ones are most likely to be similar to our Earth.

Among the new discoveries, the scientists say the planets called Kepler438b and 442b are the closest to Earth. Kepler 438b is just about 10% larger than our planet, and gets 40% more of its energy from its star than Earth receives from the Sun. Temperatures there would be about 140 degrees. Kepler 442b is about 33% larger than Earth, but receives 30% less energy from its star. That would make it a potentially chillier world than our own.Torres says it is possible for life to exist and survive in either of those temperatures, but for that to happen, these planets would need to have another key ingredient for life: a heat-trapping atmosphere like Earth’s.

While these findings add to the possibility that life exists beyond Earth, Torres cautions against drawing conclusions, “We are not claiming they are inhabited,” he says. In fact, these planets are so far away that the scientists cannot observe them directly, which can be explanation for why for now it remains unknown whether these planets contain life. But the discovery of planets in their stars’ habitable zones suggests that somewhere out there, some form of alien life may have taken hold.

1.The scientists have identified eight planets,　 .

A. which are suitable for humans to live on

B. some of which are possible for life to exist on

C. some of which have the same situations as Earth

D. which are not too hot or too cold for water to exist on

2.Which statement about the discovery of Torres and his team is TRUE?

A. Kepler 438b is too hot for any life to exist on

B. Kepler 438b and 442b are the farthest to Earth

C. They have made the discoveries through Kepler

D. They have discovered over 1000 planets in 7 years

3.What is the possible thing that Kepler 442b lacks for life to exist on?

A. The water B. The sunlight

C. The soil D. The atmosphere

4.About their exploration, Torres wants to indicate that　 .

A. there is a lot left to learn

B. they have had decisive gains

C. it is the first in human history

D. it is certain for life on the planets

5.Which can be the best title for this passage?

A. Are We Alone?

B. Eye on the Stars

C. Discover Another Earth

D. Discovery of New Stars to Live on

高三英语阅读理解中等难度题查看答案及解析

1.　　 　 Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.

The ridge （隆起） structure on a person's fingers does not change with growth and is not affected by surface injuries．Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original pattern．2. 　 　 Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take.

Finger-prints can be made very easily with printer's ink．They can by recorded easily．3. 　 Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case．A suspected man may deny a charge but this may be in vain．4. 　 　

When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye.

5.　 　 Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained.

A．Special techniques are used to "develop" them.

B．A fingerprint is an impression of the friction ridges of all part of the finger.

C．It is only when the inner skin is injured that the arrangement will be destroyed.

D．With special methods, identification can be achieved successfully within a short time.

E．A latent print is the chance reproduction of the friction ridges deposited on the surface of an item.

F．His finger-prints can prove who he is even if his appearance has been changed by age or accident.

G．Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable.

高三英语其他题中等难度题查看答案及解析

--- I had a good holiday at my uncle's.

--- ________.

高三英语单项填空中等难度题查看答案及解析

—I had a good holiday at my uncle’s.

—________ .

A. Oh, that’s very nice of you    B. Congratulations

C. Oh, I’m glad to hear that　   D. It’s a pleasure

高三英语单项填空中等难度题查看答案及解析

__1.___  Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.

The ridge （隆起） structure on a person's fingers does not change with growth and is not affected by surface injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original pattern.2.________ Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take.

Finger-prints can be made very easily with printer's ink. They can be recorded easily.

___3.___ Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case. A suspected man may deny a charge but this may be in vain. ___4.___ .

When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye.  ___5.___ . Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained.

E. A latent(隐约的)print is the chance reproduction of the friction ridges deposited on the surface of an item.

F. His finger-prints can prove who he is even if his appearance has been changed by age or accident.

G. Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable.

高三英语阅读理解中等难度题查看答案及解析

—I had a really good weekend at my uncle's．

—_________.

高三英语单项填空简单题查看答案及解析

A team of scientists says that playing sounds underwater can get fish to return to areas with severely damaged coral reefs(珊瑚礁).In an experiment, they found fish returned after hearing recordings of the sounds like a healthy ocean reef. The research results were reported in Nature Communications.

The scientists placed underwater speakers in areas where coral had been dying in Australia’s northern Great Barrier Reef. They played the sounds over a period of about six weeks in 2017 and studied the results. The team reported that twice as many fish arrived in the areas where the sounds of healthy coral were played. The sounds also led to a 50 percent increase in the number of species present in the area, the researchers found. The researchers noted the importance of having many different kinds of fish return to the area. Different species of fish perform many activities that support the ocean environment and sea life.

Steve Simpson is a professor at the University of Exeter who helped lead the research. He explained, “Healthy coral reefs are remarkably noisy places. They contain the sounds of many kinds of shrimp, fish and other sea creatures. Young fish listen to these sounds when they are looking for a place to settle. Reefs become extremely quiet when they suffer destruction that is usually related to human-caused pollution. Coral damage can drive shrimp and fish away. But the experiment suggested that the use of underwater loudspeakers was an effective way to get young fish to come back.”

Mark Meekan is a fish biologist. He said that the return of the fish is the first step towards seeing major improvements in reef health. “Recovery is underpinned (巩固) by fish that clean the reef and create space for corals to regrow,” he said. University of Bristol professor, Andy Radford, said the underwater sounds are a promising way to fight coral reef damage at the local community level. But he noted that other threats need to be reduced as well. These include climate change, pollution and over fishing.

1.Why can underwater speakers make fish return?

A.Because the fish prefer music around their habitats.

B.Because they play sounds as a healthy reef does.

C.Because the fish know the places with them become better.

D.Because they can drive the natural enemies of fishes away.

2.What effect do different kinds of fish have on the ocean according to the text?

A.Keeping the ocean’s ecological balance. B.Removing the remarkable noises.

C.Preventing the pollution caused by human. D.Driving dangerous creatures away.

3.How does the author prove the significance of this new finding?

A.By quoting different authorities’ words.

B.By comparing the result with another study’s.

C.By offering many statistics.

D.By showing the detailed process of experiments.

4.In which section of a newspaper may this text appear?

A.Education. B.Entertainment.

C.Environment. D.Economy.

高三英语阅读理解中等难度题查看答案及解析

The results of the experiment proved to be very good, _________ was more than we expected.

A. which　　　　　　　　　 B. what

C. that　　　　 　　 　　 D. this

高三英语单项填空中等难度题查看答案及解析

The results of the experiment proved to be very good, _________ was more than we expected.

A. which　　　　　　　　　 B. what　　　　　　　 C. that　　　　　　　 D. this

高三英语单项填空中等难度题查看答案及解析