The green turtle is listed as endangered by t...

The green turtle is listed as endangered by the International Union for the Conservation of Nature. Under the U．S. Endangered Species Act of 1973, the green turtle was listed as threatened except for the breeding populations in Florida and on the Pacific coast of Mexico, where it is listed as endangered.

Green turtles continue to be caught for money by humans, and the destruction and loss of nesting and foraging(觅食)sites is a serious problem. Humans have already caused the decrease of large green turtle populations, including those that once nested in Bermuda and Cayman Islands. The situation of green turtle populations is difficult to determine because of our lack of knowledge about their life cycles. The number of nests in Florida appears to be increasing, but we don't know whether this is due to an increase in the number of nests or because we have started to monitor(监控)nesting beaches more closely.

The green turtle is the largest hard­shelled sea turtle. Adults of this species commonly reach 100 cm in length and 150 kg in mass. The average size of a female nesting in Florida is 101.5 cm straight in length, with an average body mass of 136 kg.

Growth rates of green turtles have not been measured under natural conditions. Green turtles grow slowly.

In the southern Bahamas, green turtles grow from 30 to 75 cm in 17 years, and according to Bjorndal and Bolten, growth rates decrease with increasing length. Growth rates measured in green turtles from Florida and Puerto Rico fall within the range of growth rates measured in the southern Bahamas. Based on growth rate studies of wild green turtles, the researchers Balazs, Frazer and Ehrhart estimate the age of sexual maturity(成熟)can range anywhere from 20 to 50 years.

1.The main idea of the passage is to tell us________.

2.Which of the following is NOT a reason why green turtles are endangered?

3.According to the passage, the green turtle________.

4.Why is it hard for us to know the number of green turtles?

高二英语阅读理解中等难度题查看答案及解析

Today, nearly 400 animals are listed as threatened or endangered animals in the United States. Many are at risk of becoming extinct or disappearing permanently. Unless efforts to save these vulnerable(易受攻击的) animals succeed, many of the country's greatest creatures will be lost forever. From the facts listed, guess which animals are endangered. Click on the picture to find out more about each of these animals in trouble.

American Crocodile

●American crocodiles are about 12 feet long. They live on land and in shallow water, swamps and marshes.

●American crocodiles like to float in the water with only their eyes and noses above the water surface.

●American crocodiles eat mostly small animals, which they grab with their strong jaws and sharp teeth.

●American crocodiles lay eggs. They hide their eggs under twigs and leaves, or bury them in the sand.

●Some crocodiles help their young hatch, and then carry them to the water in their mouth.

Habitat

Southern Florida, Mexico, Central and South American, Caribbean islands.

Why It's Endangered

Overhunted for its skin and habitat destruction.

Peninsular Bighorn Sheep

●Bighorn sheep can weigh as much as 280 pounds and stand about 3 feet tall.

●They live in dry, desert mountain ranges, near rocky cliffs.

●Bighorn sheep eat grass, twigs and leaves.

●Male sheep are called rams and can be recognized by their huge, brown horns. The horns curl back over the ears, down，and up past the cheeks.

●They live in herds or groups. The male sheep with the biggest horns are usually in charge. Male horns can weigh as much as 30 pounds.

●Males will use their massive horns to fight. The fights can last as long as 24 hours.

●Females are called ewes. They are smaller than rams and have shorter, smaller horns.

Habitat

Nevada and California to west Texas and south into Mexico.

Why It's Endangered

Loss of habitat, hunting illegally, drought and disease.

1.Where can the article be found according to the passage?

A．Newspaper.　　　　 B．Website.

C．Student book.　　 D．Magazine.

2.Which of the following is NOT true according to the description about American crocodiles?

A．American crocodiles live on land and in swamps and marshes.

B．American crocodiles hide their eggs under leaves, or bury them in the sand.

C．American crocodiles grab small animals with their strong jaws and sharp teeth.

D．American crocodiles like to float with their eyes and nose below the water surface.

3.Where can we find both American crocodiles and Bighorn sheep according to the passage?

A．Southern Florida.　　　 B．California.

C．Mexico.　　　　　　　　 　　 D．West Texas.

4.Rams make use of their massive horns to ________.

A．master the herds　 　 B．show their beauty

C．fight with others　　 D．hunt for food

5.What can be the best title?

A．Animals in Danger

B．American Crocodile

C．Peninsular Bighorn Sheep

D．How to Save Animals in Danger

高二英语阅读理解中等难度题查看答案及解析

All living things in the ocean are endangered by humans polluting the water. 1. One way is the dumping( 倾倒) of certain waste materials, such as garbage and used water, into the ocean. The harmful bacteria that feed on the garbage use up much of the oxygen in the surrounding water, so other creatures in the area often don’t get enough.

Other substances( 物 质 ), such as radioactive waste material, can also cause pollution. 2. But after years of being exposed to the ocean water, the containers may begin to leak(漏).

3. Oil is spilled into the ocean when oil ships sink or when oil wells in the ocean cannot be capped. The oil covers the gills( 腮 ) of fish and prevents them from breathing. Diving birds get the oil on their wings and are unable to fly. When they clean themselves, they are often poisoned by the oil.

Rivers also　 can　 contribute to the　 pollution of oceans. 4. Fertilizers　 used　 on　 the farmlands may be carried to the ocean, where they cause a great increase in the amount of certain plants. Too much of some plants can actually be poisonous to fish.

Worse yet are the pesticides(杀虫剂) carried to the ocean. these chemicals slowly build up in fish and other small animals. 5. The buildup of these chemicals in the animals can make them ill or cause their babies to be born dead or sick.

A Fish and turtles suffer the most

B Pollution occurs insseveral ways.

C Oil is another major source of concern

D Many rivers receive the runoff water from farmlands

E Farmers use these artificial fertilizers to increase crop harvest.

F These materials are often placed in the water in safely sealed containers.

G These animals then pass the pesticides on to the larger animals that feed on them.

高二英语七选五简单题查看答案及解析

Food labels are such a mess that the government is redesigning them, as the ingredient(营养成分) lists are usually too confusing. As a result, a shopper could spend hours in a grocery store watching, calculating, and comparing, and still could not get it right. ShopWell is trying to help by allowing consumers to scan food labels and receive understandable and personalized information.

Here’s how it works. Register for ShopWell, and enter your age and gender. Add your goals (General health? Or are you trying to lose weight?). Then, note what you want in your diet, such as protein or iron, and what you want to avoid(added sugar, say). Add your allergies(过敏的物质) and things you cannot accept, and start scanning.

Then ShopWell will come up with a clearly personal result: green for a food that is good for you; yellow for foods you can enjoy a little; and red for foods you should avoid.

The results are easily understandable and is clean because it’s not mixed with ads. Instead, ShopWell makes money by selling data to supermarkets. Its database contains 350,000 products, the app has been downloaded 1.3 million times, and the company claims a scan every two seconds “in stores such as Walmart, Whole Foods and 7-Eleven,” in the words of marketing manager James Allgood.

One of the first items I scanned was So Delicious Coconut Milk Creamer, which I buy because I’m lactose(乳糖) intolerant. It turns out it’s only a little suitable for me — because of its 1 gram per serving of added sugar. I’m not sure I’ll give it up. But I did ask the app to watch for added sugar, and it’s doing its job.

One drawback to ShopWell is that the scanner often doesn’t work for items from Costco or Trader Joe’s. Meanwhile, Some user reviews say that it doesn’t cover enough allergies.

1. Why do consumers hesitate long when deciding which food to purchase in a shop?

A. Because there are usually an extremely wide variety of food in the shop.

B. Because food labels in the shop are in such a mess that they need redesigning.

C. Because consumers desire to scan food labels for understandable information.

D. Because consumers can hardly make sense of the information on the food labels.

2.What does the author intend to tell the readers in Paragraph 2?

A. The proper use of ShopWell.　             B. The function of ShopWell.

C. The development of ShopWell.             D. The advantage of ShopWell.

3.How can ShopWell make some profits?

A. By providing its collected data to supermarkets.

B. By selling 350,000 products of its own.

C. By downloading the app 1.3 million times.

D. By following the words of marketing manager James Allgood.

4.What does the underlined “drawback” in the last paragraph probably mean?

A. Scanner        B. Disadvantage

C. Benefit        D. Item

高二英语阅读理解中等难度题查看答案及解析

The speaker is giving rather an________ speech, as I can judge from the________ look of all the listeners.

A. inspiring；inspiring   B. inspired; inspired                  C. inspiring; inspired             D. inspired; inspiring

高二英语单项填空中等难度题查看答案及解析

The speaker is giving rather an________ speech, as I can judge from the________ look of all the listeners.

A. inspiring；inspiring                    B. inspired; inspired

C. inspiring; inspired                           D. inspired; inspiring

高二英语单项填空中等难度题查看答案及解析

When baby turtles first come out of eggs, they head to the sea by nature. The beach surface goes down, which is one directional clue they follow. Another is light: The horizon (地平线) over the sea is brighter than the horizon over land.

But lights from towns and beach developments can confuse the baby turtles. The sky shining above a city can mislead them to wander. And particularly bright lights can draw them away from the sea.

You’d think the extra time crawling (爬行) might wear out baby turtles, which need energy　 once they get in the water to swim for about a day to get to their destination in the sea. In a normal trip from nests to waves, the babies build up chemicals that show they have been pushing themselves.

Some researchers took the baby turtles to a lab, where they ran on a treadmill and swam in a tank while their blood and breathing were monitored. The finding is surprising: even after hours of crawling, the turtles were fine by all measures and swam as well as turtles that didn't have an extra crawling period.

The reason is that they often stop while crawling if they are doing U for a long time, unlike the disturbed trip they make when heading straight to the water. So misled turtles are not worn out.

But the misleading lights are still a problem for the babies. The longer they spend on the beach wandering, the more they are exposed to natural enemies. They can also end up losing their lives in the heat of the sun.

1.What attracts the baby turtles away from the sea?

A.Bright lights. B.Vast beaches.

C.Buildings in cities. D.Noises from towns.

2.What does the underlined word “they” refer to in paragraph 3?

A.Chemicals. B.Nests.

C.Waves. D.Baby turtles.

3.Why don’t the baby turtles feel exhausted after long crawling?

A.They travel by night. B.Their trip is undisturbed.

C.They take frequent breaks. D.They are refreshed by city lights.

4.What may happen to the baby turtles exposed to misleading lights?

A.They are in great danger.

B.They avoid their natural enemies.

C.They will wander on the beach for a while.

D.They are more likely to find the destination.

高二英语阅读理解中等难度题查看答案及解析

The number of traffic accidents caused by drunk driving is _______ as the number of those caused by other reasons.

A. twice as many   B. twice as large      C. as twice large     D. many as twice

高二英语单项填空中等难度题查看答案及解析

Cheating by using the work of others is the same as ruining your life 1. drugs. It is not only 2.（necessary）and foolish, it can also start to be addicted in many ways. If a student constantly cheats, then it may become a habit in the future. Besides, no one needs to cheat. We all have brains that we can use and also teachers, parents, and friendrs to help 3. (we). Anyway, it’s not like we will succeed in life if we continuously cheat. There is no need 4. (ruin) both your education and your life by cheating.

5. (cheat) usually suffer many consequences. In the beginning when the student is in grade school, cheating may only lead to 6. (lose) credit and going to the principal’s office. In middle school, there will be Saturday punishments, suspensions, and even parent-teacher conferences. But in high school, college, and the rest of a person’s life, it is absolutely unlikely that cheating 7. (tolerate).

Of all things, taking credit for others’ work is not only unnecessary but quite unreasonable as well. If we all just do our work, then there is no point in cheating. We should make 8. effort for our education instead of taking the easy way out. But most importantly, 9. we all work hard instead of cheating, then everyone will live a 10. (success) life.

高二英语语法填空中等难度题查看答案及解析

The number of children is expected to _______ rapidly as the declaration of Two-child Policy by the government.

A. standardize　　 B. supervise

C. multiply　　 D. adopt

高二英语单项填空简单题查看答案及解析