四、还原信息
Last year, a plane crashed. Rescue teams (营救队) were sent to search. (1) They brought the hope of understanding what caused the terrible airline disaster.
However, what are black boxes? A black box is known as the flight recorder (飞行记录仪). Every plane has at least two black boxes. (2) They record everything about a flight. The information helps to find out what leads to an accident and prevent such accidents in the future.
The use of black boxes dates back to the early 1950s. An Australian scientist realized that people who can best explain what happened are unluckily dead. (3)
Except for its name, a black box is not black in colour or like a box. Instead, it is painted in bright orange. (4) It is not certain how it got its name.

1. E 2. C 3. D 4. F

五、完形填空
Is an earthquake dangerous? Yes, of course. But this doesn't mean you can't do 1 about it. If you know what to do in an earthquake, you can be safe.
Keep a 2 mind. Worries may cause bad decisions. Don't follow others blindly (盲目地). Think about what you should do. The 3 several minutes are important.
If you are 4 , quickly move to a safe place in the room such as under a desk or table. Take care of your 5 . Stay away from windows and things that may fall and hurt you.
If you are far away from the door, don't rush to it. You will find too many people 6 to escape (逃跑) at the same time. Moreover, don't use a lift. You may not get out of it.
Stay in a 7 place till you are sure it's OK to leave. Some aftershocks (余震) may follow an earthquake. These are as dangerous 8 the earthquake.
If you are in debris (废墟), try to 9 your hands and legs. You may make noises by hitting stones. Shouting will make you tired. Try to find some water and food. They are important for you if you aren't found in a short time. Wait 10 for help.
Keep the tips in mind and they will help you.
() 1. A. something
B. nothing
C. anything
D. everything
() 2. A. busy
B. clever
C. free
D. cool
() 3. A. first
B. second
C. third
D. fourth
() 4. A. outdoors
B. asleep
C. indoors
D. tired
() 5. A. money
B. head
C. clothes
D. food
() 6. A. stop
B. try
C. change
D. lose
() 7. A. dangerous
B. safe
C. clean
D. dirty
() 8. A. as
B. to
C. with
D. of
() 9. A. drop
B. tie
C. raise
D. free
()10. A. carefully
B. patiently
C. worriedly
D. correctly

1. A 2. D 3. A 4. C 5. B 6. B 7. B 8. A 9. D 10. B