Ⅰ. 用括号内所给单词的适当形式填空。
1. To keep safe, we should avoid (play) near the river alone.
2. We should learn more about (safe) to protect ourselves from danger.
3. He (throw) the rubbish into the dustbin and then left the park quickly.
4. The (describe) of the accident helped the police find the cause easily.
5. After the earthquake, many people needed medical (aid) at once.

1. playing 2. safety 3. threw
4. description 5. aid

Ⅱ. 用方框中所给单词或短语的适当形式填空。
avoid environment ill take care of hurt oneself turn on
1. We must do our part to protect the by reducing plastic waste and planting more trees.
2. If you don't wear sports shoes when running, you may or fall down easily.
3. It's necessary for us to the elderly in our neighbourhood when they are in need.
4. catching a cold, you should wear warm clothes and wash your hands often in winter.
5. Too much junk food and little exercise will lead to all kinds of .
6. Please the light when you enter the room, for it's too dark to see anything.

1. environment 2. hurt yourself
3. take care of 4. To avoid 5. illnesses
6. turn on

Ⅲ. 阅读短文，回答下列问题。
Nowadays, a lot of people around the world enjoy jogging. It is a kind of running. Jogging means running slowly, but it is still faster than walking.
In the mornings and evenings, you can see people jogging in parks or along city streets. One of the reasons is that jogging is an excellent way of exercise. It helps people lose weight and stay active. More importantly, jogging is suitable for everyone regardless of how fit you are. For most people, jogging is helpful. It can make their hearts work better. Scientists think that jogging can reduce the risk of heart problems. For exercise beginners, jogging is a good start. Because the exercise is not very difficult, beginners can easily give it a try.
Another reason is that jogging is cheaper than many sports—to start, just get some comfortable sports clothes and good running shoes.
Although jogging is good, overdoing it is harmful to the body. It’s not a good idea to jog every day. The body needs time to get better from exercise. If you keep training for years and you are quite fit, it’s okay to jog five or six times a week. But remember, take at least one day off each week.
As you can see, jogging can lead to plenty of improvements in health. Jog with friends in the right way. You will feel much healthier. Just try it.
1. What is jogging according to the passage?

2. Why is jogging a good start for exercise beginners?

3. What do people only need to prepare to start jogging?

4. What does the writer want to tell us by saying “The body needs time to get better from exercise.”?

1. It means running slowly, but it is still faster than walking.
2. Because the exercise is not very difficult and beginners can easily give it a try.
3. Some comfortable sports clothes and good running shoes.
4. Over-jogging will make the body unable to rest and recover.