A marine biologist placed a shark into a larg...

A marine biologist placed a shark into a large holding tank and then put several small bait (诱饵) fish into the tank. The result met your_______the shark quickly swam across the tank, attacked and ate the smaller fish.

The biologist then_______a strong piece of fiberglass into the tank, creating two_______parts. She then put the shark on one side of the_______fiberglass and a new set of bait fish on the other. Again, the shark quickly_______. But this time, the shark_______because it knocked hard against the fiberglass_______. Determined, the shark kept repeating this_______every few minutes, but_______. Meanwhile, the bait fish swam around__________in the second part. Eventually, the shark abandoned__________of hunting. This experiment was carried out several times. Each time, the shark got less__________and made fewer attempts to attack the fish until it__________hitting the fiberglass and simply stopped attacking. The biologist then__________the fiberglass, but the shark didn't attack. The shark was trained to believe a__________existed between it and the bait fish, so the bait fish could__________wherever they wished, free from harm.

Many of us, after__________setbacks and failures, emotionally give up and stop trying. Like the shark in the story, we__________that because were unsuccessful in the past, we will always be unsuccessful.__________,even when no “real” barrier exists between where we are and where we want to go, we__________see it in our heads.

1.A.intentions B.expectations C.schedules D.requirements

2.A.changed B.added C.inserted D.crashed

3.A.separate B.opposite C.connected D.relevant

4.A.delicate B.hidden C.transparent D.flexible

5.A.attacked B.controlled C.gathered D.escaped

6.A.bounced B.paused C.withdrew D.left

7.A.tapper B.divider C.tester D.catcher

8.A.routine B.practice C.mistake D.behavior

9.A.failed B.suffered C.passed D.snuggled

10.A.uncovered B.unchallenged C.unharmed D.unnoticed

11.A.joy B.trouble C.need D.hope

12.A.blind B.aggressive C.allergic D.arbitrary

13.A.got occupied with B.got involved in C.got tired of D.got used to

14.A.readjusted B.restored C.replaced D.removed

15.A.distance B.barrier C.gap D.distinction

16.A.swim B.enjoy C.dive D.flee

17.A.remembering B.rejection C.experiencing D.quitting

18.A.ignore B.fear C.suspect D.believe

19.A.Above all B.In other words C.As a result D.In conclusion

20.A.abruptly B.randomly C.eventually D.constantly

高三英语完形填空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。选项中有两项为多余选项。

During a research experiment a marine(海洋) biologist placed a shark into a large holding tank and then released several small fish into the tank.1.The marine biologist then inserted a strong piece of clear fiberglass（玻璃纤维）into the tank, creating two separate parts. She then put the shark on one side of the fiberglass and a new set of small fish on the other.Again, the shark quickly attacked. This time, however, the shark hit the fiberglass divider and bounced off.2.Meanwhile, the small fish swam around unharmed in the second part. Eventually, about an hour into the experiment, the shark gave up.This experiment was repeated several dozen times over the next few weeks.3.Eventually the shark got tired of hitting the fiberglass divider and simply stopped attacking altogether.The marine biologist then removed the fiberglass divider, but the shark didn’t attack.4.So, they swam wherever they wished, free from harm.Like the shark in the story, many of us, after experiencing setbacks and failures, emotionally give up and stop trying.5.In other words, we continue to see a barrier in our heads, even when no ‘real’ barrier exists between where we are and where we want to go.

A.At the same time, the shark tried again and again.

B.We believe that because we were unsuccessful in the past, we will always be unsuccessful.

C.The shark was trained to believe a barrier existed between it and the small fish.

D.It kept repeating this behavior every few minutes fruitlessly.

E.We should keep on trying even if we meet obstacles.

F.Each time, the shark got less aggressive and made fewer attempts to attack the small fish.

G.As you would expect, the shark quickly swam around the tank, attacked and ate the smaller fish.

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。选项中有两项为多余选项。

During a research experiment a marine(海洋) biologist placed a shark into a large holding tank and then released several small fish into the tank. 1._______

The marine biologist then inserted a strong piece of clear fiberglass（玻璃纤维）into the tank, creating two separate parts. She then put the shark on one side of the fiberglass and a new set of small fish on the other.

Again, the shark quickly attacked. This time, however, the shark hit the fiberglass divider and bounced off. 2._______ Meanwhile, the small fish swam around unharmed in the second part. Eventually, about an hour into the experiment, the shark gave up.
This experiment was repeated several dozen times over the next few weeks. 3._____　 Eventually the shark got tired of hitting the fiberglass divider and simply stopped attacking altogether.

The marine biologist then removed the fiberglass divider, but the shark didn’t attack. 4._____ So, they swam wherever they wished, free from harm.

Like the shark in the story, many of us, after experiencing setbacks and failures, emotionally give up and stop trying. 5.____ In other words, we continue to see a barrier in our heads, even when no ‘real’ barrier exists between where we are and where we want to go.

A. At the same time, the shark tried again and again.

B. We believe that because we were unsuccessful in the past, we will always be unsuccessful.

C. The shark was trained to believe a barrier existed between it and the small fish.

D. It kept repeating this behavior every few minutes fruitlessly.

E. We should keep on trying even if we meet obstacles.

F. Each time, the shark got less aggressive and made fewer attempts to attack the small fish.

G. As you would expect, the shark quickly swam around the tank, attacked and ate the smaller fish.

高三英语七选五中等难度题查看答案及解析

When fisheries biologist James Drymon noticed feathers in the vomit of a tiger shark, he first assumed they belonged to some unfortunate seabird: a gull, perhaps, or a pelican. But when he and his team genetically sequenced the feathers, the results surprised them: the feathers came from a land-based songbird called a brown thrasher. So what was it doing in a tiger shark’s stomach in the Gulf of Mexico?

Drymon, a researcher at Mississippi State University’s Coastal Research and Extension Center, and his colleagues sorted songbird from a tiger shark’s stomach through the stomach contents of 105 juvenile tiger sharks between 2010 and 2018. Nearly 40 percent had recently feasted on birds that come from dry land. In all, the scientists counted 11 terrestrial bird species showing up on the sharks’ menu. The results were published online in May in Ecology. Researchers have known since the 1960 s that sharks sometimes eat songbirds. “But what was interesting to us was the prevalence of the behavior,” Drymon says, “This is something that happens every year in a high number of sharks.”

Every fall and spring, songbirds undertake dramatic migrations across the Gulf of Mexico. If bad weather comes along, they can be forced to land on the water—which is effectively a death sentence. “The estimate for the number of migrants that die because of storm-related events is in the billions,” Drymon says. He suspects that sharks have long taken advantage of this twice-yearly nutritional bounty raining down from the skies, but scientists have only recently had the genetic tools to confirm this by identifying partially digested feathers.

“The results stressed how interconnected marine and terrestrial ecosystems can be,” says University of Miami marine ecologist Neil Hammerschlag, who was not involved in the study, “It shows how opportunistic these sharks are.”

1.How did James Drymon and his colleagues identify the feathers?

A.By making comparison. B.By checking their DNA.

C.By observing them closely. D.By analyzing previous data.

2.What do we know about tiger sharks?

A.They dislike terrible weather. B.Most of them feed on land birds.

C.They actively catch songbirds for food. D.They are good at making use of opportunities.

3.According to the passage, what do songbirds fear most when they migrate?

A.Sharks in the sea. B.Other larger birds.

C.The stormy weather. D.The long distance.

4.What is the text mainly about?

A.Tiger sharks’ eating habit. B.Researchers’ identification of feathers.

C.Land birds’ suffering a lot when migrating. D.Land birds’ being on the menu of tiger sharks.

高三英语阅读理解中等难度题查看答案及解析

Sharks have gained unfair reputation for being large fierce sea animals. That humanity’s unfounded fear and hatred of these ancient creatures are leading to a worldwide slaughter (大屠杀) may result in the extinction of many larger, coastal shark species. The shark is the victim of a warped (有偏见的) attitude of wildlife protection; we strive (努力) only to protect the beautiful, non-threatening parts of our environment. And, in our efforts to restore only non-threat parts of our earth, we ignore other important parts.

A perfect illustration of this attitude is the contrasting attitude towards another large sea animal, the dolphin. During the 1980s, environmentalists in the United States objected to the practice of hunting tuna (金枪鱼) in the Pacific Ocean since these nets also caught dolphins. The environmentalists generated enough political and economic pressure to prevent tuna companies from buying tuna that had been caught in drift nets. In contrast to this effort, the populations of sharks in the Pacific Ocean have decreased to the point of extinction and there has been very little effort by the same environmentalism to save this important species of wildlife in water. Sharks are among the oldest creatures on earth, having survived in the seas for more than 350 million years. They are extremely efficient animals, feeding on wounded or dying animals, thus performing an important role in nature of knocking out the weaker animals in a species. Just the fact that species such as the Great White Shark have managed to live in the oceans for so many millions of years is enough proof of their efficiency and adaptability to changing environment. It is time for humans, who may not survive another 1,000 years at the rate they are damaging the planet, to cast away their fears and begin considering the protection of sharks as creatures that may provide us with an insight into our own survival.

1. The best summary of the passage is __________.

A. sharks have such a bad reputation

B. how sharks become some of the oldest creatures on earth

C. sharks should be put under wildlife protection

D. the campaign to save dolphins was not extended to save sharks

2. How long have sharks been living on the planet?

A. More than 25 million years.

B. More than 150 million years.

C. More than 350 million years.

D. More than 500 million years.

3.Which of the following best describes the organization of this passage?

A. Specific(细节) to general.                B. Cause and effect.

C. Statement and example.                  D. Time order.

4. How did environmentalists manage to protect dolphins?

A. They prevented fishermen from selling them for meat.

B. They pressured fishermen into protecting dolphins by law.

C. They created shelters where dolphin fishing was not allowed.

D. They brought political pressure against tuna companies.

高三英语阅读理解中等难度题查看答案及解析

In the dark forests ________ some large enough to hold several English towns.

A. stand many lakes                                    B. lie many lakes

C. many lakes lie                    D. many lakes stand

【详解】本题考查倒装结构，完全倒装。同时stand 和lie的区别。stand是突出的，lie是平躺的，湖不可能是突出的，所以此题应该选择lie。

高三英语单项填空中等难度题查看答案及解析

In the dark forests ________，some large enough to hold several English towns.

A．stand many lakes　 B．lie many lakes

C．many lakes lie　 D．many lakes stand

高三英语单项填空中等难度题查看答案及解析

The place he suggested to us ______ the meeting is a five-star hotel.

A. holding                   B. to hold                              C. hold                                  D. should hold

高三英语单项填空中等难度题查看答案及解析

The place he suggested to us ______ the meeting is a five-star hotel.

A．holding           B．to hold            C．hold             D．should hold

高三英语单项填空中等难度题查看答案及解析

The place he suggested to us ______ the meeting is a five-star hotel.

高三英语单项填空中等难度题查看答案及解析