Sea turtles are found in all warm waters thro...

Sea turtles are found in all warm waters throughout the world. Sea turtles are the___36____ of the turtles. The largest kind of sea turtle can grow as long as eight feet and ___37___ 1,500 pounds. Even the smallest kind, Kemp’s-Ridley, can ___38___ to 28 inches long and weigh almost 100 pounds. Many other turtles are small enough to___39___ in your hand. It is difficult to find population numbers for sea turtles because they do not___40____ shore once they hatch and reach the ocean, which makes it hard to ___41___ them. Sea turtles___42___ in the water because they are safer there. They cannot___43___ their heads and feet into their shells like other turtles can. Sea turtles cannot hide inside their shells __44___ other animals that want to eat them. They need to move quickly to stay safe.

When the weather ___45___ warm, sea turtles leave the ocean to___46___ their eggs on the beach. This is the only time they will ever leave the water. Most___47____ turtles spend part of the time in water___48___ part of the time on land. It is easy to understand___49____ sea turtles stay in the water. Their___50___ to swim is greater than their ability to walk. Their heavy bodies and unusual feet make it hard for them to ___51___ on land. They are better___52___ for life in the water. They are well suited for life in the sea because of__53___ their bodies are made.

The way their feet are made helps sea turtles swim very quickly. Their feet look like long __54___. When they swim, they flap their feet like a bird flaps its wings. This ___55___ way of swimming benefits sea turtles. It allows them to escape from their enemies.

高三英语完型填空困难题查看答案及解析

Turtles have an unfortunate habit of eating plastic objects floating in the sea. These cannot be digested and may ultimately kill them. It is widely assumed that this fondness for plastics is a matter of mistaken identity. Drifting plastic bags, for instance, look similar to jellyfish (水母), which many types of turtles love to eat. Yet lots of plastic objects that end up inside turtles have no similarity to jellyfish. Joseph Pfaller of the University of Florida therefore suspects that the smell of marine microorganisms (海洋微生物) which grow on floating plastic objects fools turtles into feeding.

The idea that the smell of floating plastic objects might lure animals to their death first emerged in 2016. Researchers at the University of California noticed that certain chemicals, notably dimethyl sulphide (二甲基硫), which are released into the air by floating plastics, are those which many seabirds sniff (嗅) to track down food. These chemicals mark good places to hunt because they indicate plenty of the algae (海藻) and bacteria (细菌). The researchers also found that birds which pursue their food in this way are five or six times more likely to eat plastic than those which do not.

Since turtles are known to break the surface periodically and sniff the air when finding the way to their feeding areas, Dr Pfaller theorised that they are following these same chemicals, and are likewise fooled into thinking that floating plastic objects are eatable.

To test that idea, he and his colleagues set up an experiment. They arranged for 15 turtles to be exposed to four smells: the vapour from deionised water; the smell of turtle-feeding balls made of shrimp and fish meal; the smell of a clean plastic bottle chopped up into ten pieces; and the smell of a similarly chopped bottle that had been kept in the ocean for five weeks to allow algae and bacteria to grow on it.

Two of the smells proved far more attractive to the animals than the others. When sniffing both the smell of food balls and that of five-week-old bottles, turtles kept their nostrils out of the water more than three times as long, and took twice as many breaths as they did when what was on offer was the smell of fresh bottle-plastic or deionised-water vapour.

Though they have not yet tested whether dimethyl sulphide is the culprit, Dr Pfaller and his colleagues think it is the most likely candidate. In an unpolluted ocean, pretty well anything which had this smell would be eatable— or, at least, harmless. Unfortunately, five-week-old plastic bottles and their like are not.

1.Paragraph 1 mainly tells us that turtles ________.

A.mistake plastic objects for jellyfish

B.are fooled into eating plastics by a smell

C.are dying out as a result of plastic pollution

D.break down plastics without much difficulty

2.What can we infer from the research on seabirds?

A.Seabirds eat plastics for the taste.

B.The algae and bacteria grow well on plastics.

C.Researchers got the idea from the study of turtles.

D.Some seabirds pursue food in a similar way to turtles.

3.Dr Pfaller’s research shows_______.

A.turtles prefer the smell of plastics

B.turtles live on marine microorganisms

C.dimethyl sulphide may be to blame for turtles’ death

D.plastics release the same chemicals as microorganisms

4.What is the purpose of the passage?

A.To propose a new way to study turtles.

B.To stress the importance of improving ecosystem.

C.To introduce the findings on the cause of turtles’ death.

D.To explain the effects of plastic pollution on sea animals.

高三英语阅读理解中等难度题查看答案及解析

Approximately l,250 km long, the Red Sea coast of Egypt is surely one of the best places in the world to go underwater diving. 1.？ Its hot sunny climate and clear warm water make it the ideal place for beginners as well as for experienced divers, at any time of the year.

With over fifty diving centres in the area, many different types of diving are possible. At centres for complete beginners, there are many training courses designed for them.2..　 These dives get the rookie(新手)divers used to being underwater and teach some basic skills such as swimming and breathing below the surface.

More experienced divers can choose from a vast range of possible activities. Many of these can be enjoyed either as part of a group or, if they prefer, alone. Some like to explore the coast of the National Park, where the steep cliffs(悬崖)extend underwater to a depth of more than seventy metres.3.,for dives of this kind, divers are advised to be accompanied by a guide. An experienced guide can help the divers escape the danger before it approaches.

For really advanced divers, there are some fascinating wrecks(失事船只)at the bottom of the Red Sea.4. ,it is well worth going just to see the huge variety of beautiful plants and fish down there.　 However, divers do need to be aware that one kick in the wrong direction can cause a“storm" of fine dark silt(淤泥)which can be virtually blinding.　　 5..However, divers are forbidden to touch anything or attempt to move any artworks.

A. If you are a more experienced diver

B. How well does it live up to its reputation

C. Where is exactly this truly wonderful diving place

D. As the strong currents can suddenly change direction

E. They all include simple dives with a qualified instructor

F. Although visits to these old ships require quite long boat trips

G. Also, some of the sites have artworks lying in the ships or on the sandy bottom

高三英语七选五中等难度题查看答案及解析

We are short of clean safe drinking water, which is found to be the ______ in many third world countries.

高三英语单项填空中等难度题查看答案及解析

All the students______________ in the chemistry lab with their eyes_________ the teacher.

A. are seated; watching carefully    B. sat; carefully watching

C. seat; watched carefully   D. sit; carefully watched

高三英语单项填空中等难度题查看答案及解析

There are ten waiting rooms at the newly-built station, ______in all 20,000 people.

A. seating      B. seated      C. sitting     D. to seating

高三英语单项填空中等难度题查看答案及解析

A sea turtle named Herman, an octopus called Octavia, and a seal named Lidia all spent this summer at the Smithsonian’ s National Zoo in Washington, D.C. But unlike the zoo’s other residents, they are not real animals. These creatures are actually huge sculptures and they’re made entirely out of plastic trash from the ocean.

These giant artworks, along with 14 others, are part of a traveling exhibit called “Washed Ashore: Art to Save the Sea”. The Washed Ashore project, led by artist Angela Haseltine Pozzi, works to raise awareness about the problem of plastic pollution in Earth’s oceans.

More than 315 billion pounds of plastic litter the world’s oceans today. Most of the plastic is garbage from towns and cities, as well as trash that people leave on beaches. Rainwater, winds, and high tides bring the trash into the ocean or into rivers that lead to the ocean. Once it is under the waves, the plastic begins to break up into smaller and smaller pieces. It often collects in spots called garbage patches, which spread over large areas of the ocean.

Thousands of marine animals — including whales, sea turtles, and fish — die each year from eating or getting stuck in plastic bags and other items. Plastic pieces can also injure coral and kill sea grass.

Washed Ashore and other organizations are working to stop that from happening. Since 2010, Washed Ashore volunteers have collected 38,000 pounds of plastic trash from more than 3000 miles of beaches. They helped Pozzi create more than 60 sculptures of marine creatures that were harmed by plastic pollution.

The artworks on display at the National Zoo include a 20-foot-long coral reef, a 12-foot-long shark, and a 16-foot-long parrot fish. Each one is made from hundreds of pieces of trash like water bottles and sunglasses.

“These sculptures are a powerful reminder of our personal role and global responsibility in preserving biodiversity on land and in the sea,” says Dennis Kelly, director of the National Zoo.

1.Why is Angela exhibiting her sculptured animal?

A.To prove her talent in sculpture.

B.To attract most visitors to the zoo.

C.To care about the plastic pollution in seas.

D.To teach the people the use of plastic.

2.What is stressed in Para. 3 according to the text?

A.Why plastic is difficult to break up.

B.What problems plastic litter causes.

C.Where plastic pieces go at last.

D.How garbage patches are formed.

3.What are Washed Ashore volunteers doing?

A.Collecting pollution trash from the beaches.

B.Turning trash from the ocean into art.

C.Raising 38,000 pounds for plastic pollution.

D.Surveying the data of plastic litter in oceans.

4.Which of the following best describe Dennis Kelly’s attitude to Pozzi’s sculpture?

A.Doubtful B.Supportive

C.Negative. D.Indifferent

高三英语阅读理解中等难度题查看答案及解析

We all know the truth ______ there are air, water and sunlight, there are living things.

高三英语单项填空中等难度题查看答案及解析

All people, __ they are old or young, black or white, all had the same dream to have a peaceful world.

A   whether   B  however   C  no matter   D  even though

高三英语单项填空简单题查看答案及解析

In the past few years, sea ice ____ in the Arctic as a result of global warming.

高三英语单项填空中等难度题查看答案及解析