句型转换
【小题1】She often does her homework at night. (变为否定句)
She                              her homework at night.
【小题2】We are cleaning our classroom now. (对划线部分提问)
                  you          now?
【小题3】He likes pandas because they are very cute. (对划线部分提问)
                he        pandas?
【小题4】I think he is in the classroom.（改为否定句）
I        think he        in the classroom.
【小题5】Mr Black is a doctor.（对划线部分提问）
                Mr Black         ?

In the past, man did not have to think about the protection of his environment. There were not many people on earth, and natural resources seemed to be unlimited.

Today, things are different. The world has become too crowded. We are using up our natural resources too quickly, and at the same time we are polluting our environment with dangerous chemicals. If we continue like this, human life on earth will not survive.

Everyone realizes today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing methods, more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on the land. Yet, we continue to use bigger and more powerful machines to cut down more and more trees.

We realize that if rivers are polluted with waste products from factories, we will die. However, in most countries waste products are still put into rivers or into the sea, and there are few laws to stop this.

We know, too, that if the population of the world continues to rise at the present rate, in a few years, there will not be enough food.

What can we do to solve these problems?

If we eat more vegetables and less meat, we will easily get more food. Land that is used to grow crops can feed five times more people than land where animals are kept.

The world population will not rise so quickly if people use modern methods of birth control.

Finally, if we educate people to think about the problems, we shall have a better and cleaner living place in the future.

During the day we work and play; at night we sleep. Our bodies rest while we sleep. In the morning we are ready to work and play again. While we are asleep, our bodies grow most. Children who are tired usually need more sleep. We can get our lessons better and we feel better too, when we have had plenty of rest. Boys and girls who are eight or nine years old need ten hours of sleep every night. Our bodies need plenty of air when we sleep. If we do not get enough fresh（新鲜的）air we’ll feel tired when we wake up. While in bed we must not cover our heads. If we do, our lungs（肺）will not get enough fresh air. If we open our windows at night we can have plenty of fresh air. Cool air is better than warm air. Boys and girls who want to grow and be strong must get plenty of sleep.

1.Our bodies grow most while we are _______.

A．eating            B．playing            C．sleeping          D．waking

2.Which is better for us at night?

A．Hot air            B．Cool air           C．Warm air          D．Dry air

3.Too little sleep makes us ________.

A．happy            B．hungry            C．tired             D．grow

4.How much sleep should boys and girls of nine years have every night?

A．Eight hours        B．Nine hours         C．Ten hours         D．Eleven hours

5.What do the lungs need most?

A．Fresh air          B．Food             C．Rest              D．Exercise

"Dear Grandpa Guo, we are losing our childhoods! Please help us!"
Guo Chuanjie, a famous scientist, received a letter from a Beijing primary school student. The student said that many Chinese kids have to take extra classes on weekends in order to enter key middle schools. The kid hoped more people would hear his voice with Guo’s help.
Guo is a member of the Chinese People’s Political Consultative Conference (CPPCC,中国人民政治 协商会议). Last month the CPPCC members met in Beijing. They are from all walks of life - scientists, businesspeople, doctors, artists and athletes. They give proposals (提案) on the country’s important issues(问题) to make our country better. For the Beijing student’s letter, Guo read it in front of Yuan Guiren, China’s Minister of Education (教育部部长), during a CPPCC meeting.
According to Xinhua, there were 5,762 proposals in all. Many of the proposals were about problems like housing prices, heavy traffic and food safety, which were related to people’s daily lives. Some proposals were about teenagers. For example, singer Han Hong suggested that the government should deal with people who traffic(拐卖) children.
As usual, proposals will be given to relative departments (相关部门) after the meetings. For example, Guo’s proposal was handed to the Ministry of Education. The departments will consider the proposals carefully and see if they can be carried out in the future.
【小题1】The primary school student thought ____________ with Guo’s help.