单项选择题

What will happen to the plane under the "tank test"

A．It will be broken.
B．It will be made stronger.
C．It will be filled with water.
D．It Will be tested by pilots.
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单项选择题
What might be the most suitable title for the text
A．Two Important Tests on Airplanes
B．The Importance of Flying Safely
C．The Danger of Testing Airplanes
D．How Airplanes Are Made and Tested
单项选择题
The text is mainly written to explain______.
A．how to keep yourself from being hurt
B．how to stay mentally healthy
C．how and when to remain calm
D．why and how to pardon others
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