题目内容
Why ________ here for another three days?
- A.not to stay
- B.don't stay
- C.not staying
- D.not stay
Body signals（信号）
Pilots from different countries understand body signals if they have the correct training. When you wave your arms up and down in a straight line, it means "yes". When you point downwards and swing your arm from side to side, it means "no". If you want the pilot to know that it's safe to land, push your hands out in front of you and bend（弯曲）your knees. If you want to say that it's not safe to land, put your arms in the air and move them to one side.
Smoke signals
The smoke from a fire can be seen from far away, so it's a good way to draw attention. If the weather is dry, it isn't hard to start a fire. Remember, however, that fires can be very dangerous if they get out of control. Never light a fire unless you're sure that it can't spread. If the ground is dark, light smoke can be seen more easily. Green grass and leaves produce light smoke.
Ground-to-air signals
It's a good idea to build some signals, too. Use large pieces of wood to make the symbols(标记). If you can't find any wood, use earth. Some useful symbols are:
F "I need food and water."
II "I need medicine."
I "I am badly hurt."
X" I am unable to move from here."
Pilots' replies
If the pilot lowers the plane's wings from side to side, this means "message received and understood". (At night, the pilot flashes the plane's green lights.) If the pilots flies the plane in a clockwise circle, this means "message received but not understood".(At night, the pilot flashes the plane's red lights.)
However, there is no signal which means "message not received". Why not?
【小题1】 Which picture means "it's not safe land"?
【小题2】 What can we learn from the passage?
| A．Swinging your arm from side to side means "yes". |
| B．If the ground is dark, light smoke can't be seen. |
| C．If you need some medicine, make a symbol "II". |
| D．The pilots make replies with a blue light at night. |
| A．The explanation of building signals on an island. |
| B．The importance of making signals on an island. |
| C．Ways of sending out signals on a lonely island. |
| D．Ways of receiving signals from a lonely island |
( Da Wei comes across Li Lei, who is studying, in the school library. )
A: Hi, Li Lei. Are you busy with your homework now?
B: Oh, yeah, Da Wei. And you?
A: I'm here for a book. Hey, Li Lei. Have a break! We should be outside in the fresh air. It's good for us.
B: Sorry, I can't. 1 I must hand it. in tomorrow.
A: Oh, I see. But we can't always stay indoors. We must often take exercise. 2
B: Never. I hardly have time now. A sea of homework almost takes up all my free time. It's sad but that's life. 3
A: You mean my life? In fact, I'm also very busy like you. But you know I like sports. 4 When ever I have a little time, I will try them.
B: No wonder you are so energetic.
A: Yeah, better health, better grades. 5
B: Yes, you are right. It sounds as if should also try to exercise often in the future. Da Wei, shall we play basketball for a while now?
A: OK. Let's go!
| A．How about your life? |
| B．I like jumping, running, playing basketball and so on. |
| C．Why not walk in the fresh air? |
| D．How often do you exercise? |
F. I have to finish my homework first.
G. Sounds like great fun!