The two animals come from the same family but...

The two animals come from the same family but differ __ body shape and breeding habits.

A．with             B．from             C．in               D．of

高二英语单项填空中等难度题查看答案及解析

The two words have the same pronunciation, but they are different ______ spelling and meaning.

高二英语单项填空简单题查看答案及解析

------The two pairs of shoes are __________ the same colour．

------But they are different __________ colour．

高二英语单项填空中等难度题查看答案及解析

It is easy for us to tell our friends from our enemies. But can other animals do the same? Elephants can! They can use their sense of vision and smell to tell the difference between people who pose a threat and those who do not.

In Kenya, researchers found that elephants react differently to clothing worn by men of the Maasai and Kamba ethnic groups. Young Maasai men spear animals and thus pose a threat to elephants; Kamba men are mainly farmers and are not a danger to elephants.

In an experiment conducted by animal scientists, elephants were first presented with clean clothing or clothing that had been worn for five days by either a Maasai or a Kamba man. When the elephants detected(察觉)the smell of clothing worn by a Maasai man, they moved away from the smell faster and took longer to relax than when they detected the smells of either clothing worn by Kamba men or clothing that had not been worn at all.

Clothing color also plays a role, though in a different way. In the same study, when the elephants saw red clothing not worn before, they reacted angrily, as red is typically worn by Maasai men. Rather than running away as they did with the smell, the elephants acted aggressively toward the red clothing.

The researchers believe that the elephants’ emotional reactions are due to their different interpretations of the smells and the sights. Smelling a potential danger means that a threat is nearby and the best thing to do is run away and hide. Seeing a potential threat without its smell means that risk is low. Therefore, instead of showing fear and running away, the elephants express their anger and become aggressive.

1.According to the passage, which of the following statements is TRUE about Kamba and Maasai people?

A．Maasai people are a threat to elephants.

B．Kamba people raise elephants for farming.

C．Both Kamba and Maasai people are elephant hunters.

D．Both Kamba and Maasai people traditionally wear red clothing.

2. How did the elephants react to smell in the study?

A．They attacked a man with the smell of new clothing.

B．They needed time to relax when smelling something unfamiliar.

C．They became anxious when they smelled Kamba-scented(有…气味的) clothing.

D．They were frightened and ran away when they smelled their enemies.

3. What is the main idea of this passage?

A．Elephants use sight and smell to detect danger.

B．Elephants attack people who wear red clothing.

C．Scientists are now able to control elephants’ emotions.

D．Some Kenyan tribes understand elephants’ emotions very well.

4.What can be inferred about the elephants’ behavior from this passage?

A．Elephants learn from their experience.

B．Elephants have sharper sense of smell than sight.

C．Elephants are more intelligent than other animals.

D．Elephants tend to attack rather than escape when in danger.

高二英语阅读理解中等难度题查看答案及解析

Life in the Clear　 Transparent animals let light pass through their bodies the same way light passes through a window．These animals typically live between the surface of the ocean and a depth of about 3,300 feet—as far as most light can reach．Most of them are extremely delicate and can be damaged by a simple touch．Sonke Johnsen,a scientist in biology,says,“These animals live through their life alone．They never touch anything unless they’re eating it,or unless something is eating them．”

And they are as clear as glass．How does an animal become see-through?It’s trickier than you might think．

The objects around you are visible because they interact with light．Light typically travels in a straight line．But some materials slow and scatter(散射)light,bouncing it away from its original path．Others absorb light,stopping it dead in its tracks．Both scattering and absorption make an object look different from other objects around it,so you can see it easily．

But a transparent object doesn’t absorb or scatter light,at least not very much．Light can pass through it without bending or stopping．That means a transparent object doesn’t look very different from the surrounding air or water．You don’t see it—you see the things behind it．

To become transparent,an animal needs to keep its body from absorbing or scattering light．Living materials can stop light because they contain pigments(色素)that absorb specific colors of light．But a transparent animal doesn’t have pigments,so its tissues won’t absorb light．According to Johnsen,avoiding absorption is actually easy．The real challenge is preventing light from scattering．

Animals are built of many different materials—skin,fat,and more—and light moves through each at a different speed．Every time light moves into a material with a new speed,it bends and scatters．Transparent animals use different tricks to fight scattering．Some animals are simply very small or extremely flat．Without much tissue to scatter light,it is easier to be see-through．Others build a large,clear mass of non-living jelly-like(果冻状的)material and spread themselves over it．

Larger transparent animals have the biggest challenge,because they have to make all the different tissues in their bodies slow down light exactly as much as water does．They need to look uniform．But how they’re doing it is still unknown．One thing is clear for these larger animals,staying transparent is an active process．When they die,they turn a non-transparent milky white．

1.According to Paragraph 1,transparent animals　　 ．

A． stay in groups

B． can be easily damaged

C． appear only in deep ocean

D． are beautiful creatures

2.The underlined word“dead”in Paragraph 3 means　　 ．

A． silently

B． gradually

C． regularly

D． completely

【小题3One way for an animal to become transparent is to　　 ．

A． change the direction of light travel

B． gather materials to scatter light

C． avoid the absorption of light

D． grow bigger to stop light

3.The last paragraph tells us that larger transparent animals　　 ．

A． move more slowly in deep water

B． stay see-through even after death

C． produce more tissues for their survival

D． take effective action to reduce light spreading

高二英语阅读理解中等难度题查看答案及解析

The two newspapers have offered ______ views as to the same issue, which means they take different stands.

A. contradictory　　　 B. ridiculous

C. controversial　　　 D. conventional

高二英语单项填空困难题查看答案及解析

Recently a survey ____ prices of the same goods in two different supermarkets has caused a heated discussion among citizens.

A．comparing         B．compared         C．compares         D．being compared

高二英语单项填空中等难度题查看答案及解析

Recently a survey _______ prices of the same goods in two different supermarkets has caused a heated discussion among citizens.

A. comparing        B. compared         C. compares         D. being compared

高二英语单项填空困难题查看答案及解析

Recently a survey _________ prices of the same goods in two different supermarkets has caused heated debate among citizens.

A. compared　　　　　　　 B. comparing　　　　 C. compares　　　　 D. being compared

高二英语单项填空中等难度题查看答案及解析

—Have you ever seen two leaves that are exactly the same?

—Never. Leaves differ ____ each other ____ size and shape.

A．from; in　　         B．in; in            C．in; from　　     D．from; from

高二英语单项填空中等难度题查看答案及解析