The sheep farmer used their dog to　　 the cattle that　　 eating the grass here and there.

A. drive up; was B. pick up; were C. round up; was 　 D. round up; were

The deserts of the world are not all covered with sand. Many of them have surfaces of rock or clay or small stones. They are not flat, either. They often have high hills and deep valleys. There is some plants’ life in many parts of the desert. There is little rain in the desert, but it does fall often enough for most plants.

The deserts of the world are not uninhabited(not lived by people). People also live outside oases(绿洲), but these people are not farmers. They have camels, goats, donkeys, sheep, etc. These animals can live on the desert plants and do not need much water.

The people of the desert have to move constantly from place to place, they must always look for grass or desert plants for their animals. They usually live in tents. When there is no more food for their animals, they fold up their tents, pat them on their camels and donkeys, and move to another place. In good years, when there is enough food for their animals, they trade their skins and their goats and camel hairs with the people of oases for wheat and fruit. But in bad years, when there is not enough food for their animals, the people of the desert would attack the oases people. But they are also hospitable, no man in the desert would ever refuse to give a stranger food and water.

according to the passage, deserts are mostly made up of _______.

A. clay    B. rock

C. sand    D. stones

The underlined word “hospitable” has the meaning of being _______.

A. brave  B. cruel

C. strange       D. kind

In the desert _______.

A. it rains in spring only

B. it rains for a short time every month

C. there is some rain, but far from enough

D. the rainfall is just enough for the plants

People live _______.

A. only inside the oases  B. only outside the oases

C. both inside and outside the oases      D. in places with regular rainfalls

From the passage we know that life _______.

A. is hard in deserts       B. is happy in deserts

C. is impossible in deserts     D. in deserts in much better now

The deserts of the world are not all covered with sand. Many of them have surfaces of rock or clay or small stones. They are not flat, either. They often have high hills and deep valleys. There is some plants’ life in many parts of the desert. There is little rain in the desert, but it does fall often enough for most plants.

The deserts of the world are not uninhabited(not lived by people). People also live outside oases(绿洲), but these people are not farmers. They have camels, goats, donkeys, sheep, etc. These animals can live on the desert plants and do not need much water.

The people of the desert have to move constantly from place to place, they must always look for grass or desert plants for their animals. They usually live in tents. When there is no more food for their animals, they fold up their tents, pat them on their camels and donkeys, and move to another place. In good years, when there is enough food for their animals, they trade their skins and their goats and camel hairs with the people of oases for wheat and fruit. But in bad years, when there is not enough food for their animals, the people of the desert would attack the oases people. But they are also hospitable, no man in the desert would ever refuse to give a stranger food and water.

according to the passage, deserts are mostly made up of _______.

A. clay    B. rock

C. sand   D. stones

The underlined word “hospitable” has the meaning of being _______.

A. brave  B. cruel

C. strange       D. kind

In the desert _______.

A. it rains in spring only

B. it rains for a short time every month

C. there is some rain, but far from enough

D. the rainfall is just enough for the plants

People live _______.

A. only inside the oases  B. only outside the oases

C. both inside and outside the oases      D. in places with regular rainfalls

From the passage we know that life _______.

A. is hard in deserts       B. is happy in deserts

C. is impossible in deserts     D. in deserts in much better now

The deserts of the world are not all covered with sand. Many of them have surfaces of rock or clay or small stones. They are not flat, either. They often have high hills and deep valleys. There is some plants’ life in many parts of the desert. There is little rain in the desert, but it does fall often enough for most plants.

The deserts of the world are not uninhabited(not lived by people). People also live outside oases(绿洲), but these people are not farmers. They have camels, goats, donkeys, sheep, etc. These animals can live on the desert plants and do not need much water.

The people of the desert have to move constantly from place to place, they must always look for grass or desert plants for their animals. They usually live in tents. When there is no more food for their animals, they fold up their tents, pat them on their camels and donkeys, and move to another place. In good years, when there is enough food for their animals, they trade their skins and their goats and camel hairs with the people of oases for wheat and fruit. But in bad years, when there is not enough food for their animals, the people of the desert would attack the oases people. But they are also hospitable, no man in the desert would ever refuse to give a stranger food and water.

According to the passage, deserts are mostly made up of _______.

A. clay   B. rock    C. sand      D. stones

The underlined word “hospitable” has the meaning of being _______.

A. brave    B. cruel         C. strange    D. kind

In the desert _______.

A. it rains in spring only

B. it rains for a short time every month

C. there is some rain, but far from enough

D. the rainfall is just enough for the plants

People live _______.

A. only inside the oases    B. only outside the oases

C. both inside and outside the oases    D. in places with regular rainfalls

From the passage we know that life _______.

A. is hard in deserts   B. is happy in deserts

C. is impossible in deserts D. in deserts is much better now

Sheep, like turkeys and ostriches, are not considered the cleverest animals. British scientists said last Wednesday human may have underestimated(低估) the woolly creatures. They could be much smarter than we think.

Researchers at the Babraham Institute in Cambridge, southern. England, have shown that animals have a good memory system and are extremely good at recognizing faces--which they think is a sure sign of intelligence.

Behavioral scientist Keith Kendrick and his friends trained 20 sheep to recognize and distinguish(区别) 25 pairs of sheep faces and used electrodes(电极) to measure their brain activity, which showed they could remember 50 faces for up to two years.

"If they can do that with faces, the fact is that they have to have reasonable intelligence, otherwise, what is the point of having a system for remembering anything else," Kendrick said in an interview.

So hours of seemingly mindless eating grass may not be so mindless after all.

Kendrick believes sheep got their reputation as dumb animals because they live in large groups and do not appear to have much ind

ividuality and are frightened of just about everything.

All animals, including humans, once they are frightened don't tend to show signs of intelligent action," he explained.

In research reported in the science journal Nature, Kendrick and his team showed that sheep, like humans, have a specialized system in the brain, which allows them to distinguish between many different faces that look extremely similar.

"The most important findings of the study is that they are able, both from a behavioral point of view and from looking at the way the brain is organized, to remember a large number of faces of individuals for a very long time," said Kendrick. "It is a very strange system. They are showing similar abilities in many ways to humans. "

From the first paragraph we can find that ______.

   A. people used to think sheep are smarter than the other animals

   B. people used to raise sheep in a wrong way

   C. people don't consider sheep as clever animals

   D. people have done a lot of research on sheep

From what Kendrick said in the interview we learn that ________.

   A. scientists have learned a lot about sheep's intelligence

   B. scientists have learned little about sheep's intelligence

   C. scientists can't do anything more about sheep's memory

   D. scientists don't have to research animals' memory

As is shown in the passage _________.

   A. sheep are among the weak animals

   B. it is not right for people to raise sheep in groups

   C. when sheep eat grass in the fields their minds may be active

   D. if people feel frightened, they may become more brave

When scientists found that sheep show similar abilities in many ways to humans they may think it _____.

   A. worrying          B. moving           C. frightening           D. interesting