As we drew closer, I could see a whale ______...

As we drew closer, I could see a whale ____________ by a pack of about six other killers.

A. attacking         B. being attacked       C. attack       D. to attack

高二英语单项填空简单题查看答案及解析

Have you ever wished you could see in the dark as well as an animal? In action movies, we often see characters wearing special glasses that reveal（显示）things that can't be seen in darkness. Everything looks green, but we can see the shapes and outlines clearly. As a matter of fact, this is somewhat similar to the way animals' night vision (视力) works.

You may have noticed eyeshine in pictures of animals, or seen it for yourself when light hits an animal's eyes. Dogs, cats, and many other animals have tissue (组织) called the tapetum lucidum（光神经纤维层） in each eye. The purpose of this tissue is reflect (反射) light deeper into the eye. For many animals, it leads to their excellent night vision, and it helps them hunt.

Different types of animals have different colors of eyeshine. The light reflecting back from the eyes of dogs and cat is likely to be yellow. Rats and birds usually have eyes that shine red. Other animals’ eyes may reflect white, yellow, green, or pink light. In each case, the color is related to the type of cells that make up the tapetum lucidum, as well as the chemicals inside the cells.

Eyeshine has the function of improving animals' night vision, but humans have found other uses for it. For example, when people are searching for certain types of animals, their eyeshine may be helpful in recognizing or discovering them. Also, eyeshine has inspired humans to invent substance (物质) that reflect light at night. Strips containing this substance are used to warn us of safety risks such as　 raised parts of roads. Even though humans cannot see so well at night, we have still found ways to benefit from this amazing animal feature.

1.How does the tapetum lucidum help animals' night vision?

A. It sends out light in the dark.　　 B. It makes everything appear green.

C. It reflects light back into the eyes.　　 D. It enables them to see colors at night.

2.How does the author mainly develop Paragraph 3?

A. By providing reasons.　　 B. By giving examples.

C. By following space order.　　 D. By doing experiments.

3.What can we learn about scientists' research on eyeshine?

A. They've put it to practical uses.

B. They're using it to protect some animals.

C. They're trying to include more animal types.

D. They've invented special glasses based on it.

4.What is the text mainly about?

A. How humans' night vision works.　　 B. Different colors of animals' eyes.

C. How animals see in the dark.　　 D. Eyeshine and its benefits.

高二英语阅读理解中等难度题查看答案及解析

As we stood on the top of the hill, we could see the beautiful scene that _______ before us.

A. had spread      B. has spread      C. spread    D. spreads

高二英语单项填空中等难度题查看答案及解析

Imagine looking out of your window and seeing a whale swim by.That's the sight that surprises New York City residents recently.In the past years,humpback whales have been spotted in the two rivers surrounding the island of Manhattan,the Hudson River and the East River.1.

Experts say that river cleanup efforts have improved water quality and led to an increase in the number of fish there.Fish are on the humpback's menu.2.The sighting is also an encouraging sign that conservation efforts are helping humpback whales come back.In 1973,the species was listed as the endangered.Now scientists say humpback whales are making a comeback.

By the middle of the 20th century,hunting whales for profit had nearly wiped out many whale species.In 1973, the U.S. set up the Endangered Species Act.People were no longer allowed to hunt them in the U.S. waters.In 1982, the International Whaling is illegal worldwide.3.Last September,it was announced that nine groups of humpback whales are no longer endangered.Four groups are still endangered and a fifth is threatened.

4.The number of them is growing particularly faster in the Southern Hemisphere like Tasman Sea and Coral Sea.And the number of humpback whales in Hawaii has made an amazing recovery.In 1966,there were fewer than 1,500 humpbacks there.Today there are about 10,000.But humpbacks in other parts of the world are still struggling.

5.“We still have a lot of work to do,”says Angela Somma,head of NOAAS Fisheries’ endangered Species division.“But with the right protection,the number of humpback whales should continue to grow.

A.Those efforts to save whales are paying off.

B.People are frightened when seeing whales in the river.

C.Last year,one even swam past where the mayor lives.

D.Today there are about 100,000 humpback whales worldwide.

E.The extra food in the rivers is mainly what’s attracting the whales.

F.Scientists have carried out further research on the number of the whales.

G.Scientists say that the focus needs to be on the whales that are still struggling.

高二英语七选五中等难度题查看答案及解析

From his ________ look, we could see that the professor hadn’t expected that we could raise such ________ questions to him.

A. confusing; confusing

B. confused; confused

C. confusing; confused

D. confused; confusing

高二英语单项填空中等难度题查看答案及解析

From his ______ look, we could see that he hadn’t expected that we could raise such ______questions to him.

A．confused; confusing                     B．confusing; confused

C．confusing; confusing                     D．confused; confused

高二英语单项填空中等难度题查看答案及解析

From his _____look , we could see that he hadn’t expected that we could raise such ______

questions to him.

A. confusing; confusing               B. confused; confused

C. confusing; confused                D. confused; confusing

高二英语单项填空中等难度题查看答案及解析

From the teacher’s _________ look, we could see that he hadn’t expected that we could raise such a _______ question to him.

A. confused; confused　　　　　　　　　 B. confusing; confused

C. confusing; confusing　　　　　　　　 D. confused; confusing

高二英语单项填空简单题查看答案及解析

From his _______ look, we could see that he hadn’t expected that we could raise such _______ questions to him.

高二英语单项填空简单题查看答案及解析

From his _______ look, we could see that he hadn’t expected that we could raise such _______ questions to him.

高二英语单项填空简单题查看答案及解析