[单项选择]

Healthy trees are important to us all. Trees provide shade, beauty, and homes for wildlife. Trees give us products like paper and wood. Trees can give us all these only if they are healthy. They must be well cared for to remain healthy.
Your trees’ trouble may be you yourself. People spend much time and money to plant and maintain trees. Trees improve the looks of homes, parks, business, and public buildings. Yet, people who love trees the most may be the ones who cause them injury. Of course, they do not do this on purpose. They are most likely not aware of the kinds of things that injure trees. There are many people-caused tree injuries. You should become aware of them and avoid them. Learn the things that can help to keep your trees healthy.
Healthy trees are beautiful. They make our world a pleasant place to live ill. Unhealthy trees are not as beautiful. They make our world less pleasant. Healthy trees help to cool and clean the air. They can even deade
A. beautiful
B. old
C. healthy
D. young

[单项选择]

Healthy trees are important to us all. Trees provide shade, beauty, and homes for wildlife. Trees give us products like paper and wood. Trees can give us all these only if they are healthy. They must be well cared for to remain healthy.
Your trees’ trouble may be you yourself. People spend much time and money to plant and maintain trees. Trees improve the looks of homes, parks, business, and public buildings. Yet, people who love trees the most may be the ones who cause them injury. Of course, they do not do this on purpose. They are most likely not aware of the kinds of things that injure trees. There are many people-caused tree injuries. You should become aware of them and avoid them. Learn the things that can help to keep your trees healthy.
Healthy trees are beautiful. They make our world a pleasant place to live ill. Unhealthy trees are not as beautiful. They make our world less pleasant. Healthy trees help to cool and clean the air. They can even deade
A. never cause trees injury.
B. damage trees on purpose
C. do some harm to trees without knowing it
D. not be aware of which trees are healthy

[单项选择]Healthy eating is very important for us. If we want to be healthy, we must have enough food. It must be clean food which has been properly cooked or hasn’t been polluted. It must be the right kind of food.
Most people in our country have enough food. We know when we need food because we feel hungry, then, if we eat a bowl of rice, we do not feel hungry. We have eaten enough food. But have we eaten the right kind of food
Rice and bread are both good for us. They help us to work. They keep us warm when the weather is cold. But if we do not eat other food as well, we become ill.
Meat, fish, eggs and milk are all very good for us. They help us to grow. They keep us healthy. We must have some of these kinds of food every day.
We also need fruit and vegetables. These also help us to grow and be healthy. They make our bone and skin healthy.

We mustn’t eat the food which is ______.
A. properly cooked
B. polluted
C. not polluted

[简答题]To know how to study is important for each of us. And to learn how to arrange time is also important for each of us. (sentence with parallel structure)

[单项选择]　　Trees are useful to man in three very important ways: they supply him with wood and other products; they give him shade; and they help to prevent droughts and floods. 　　Unfortunately, in many parts of the world, man has not realized that the third of these service is the most important. In his eagerness to draw quick profit from the trees, he has cut them down is large numbers, only to find that without them he has lost the best friends he had. 2 000 years ago a rich and powerful country cut down its trees to build warships, with which to gain itself an empire. It gained the empire but, without its trees, its soil became hard and poor. When the empire fell to pieces, the home country found itself faced floods and starvation. 　　Even if a government realizes the importance of adequate supply of trees, it is difficult for it to persuade the villager to see this. The villager wants wood to cook his food with; and he can earn money by producing charcoal or selling wood to the townsman.
A. Its people died of hunger.
B. It fell to pieces.
C. It became a giant empire.
D. It built many ships with wood.