[单项选择]They said they would let us know if they ______ any news about the car.
[A] will hear [B] heard [C] hear

[单项选择]They said they would let us know if they ______ any news about the car.
[A] will hear [B] heard [C] hear

[单项选择]History is （　） a subject that not only let us know something in history; it also tells us a lot of truth.
A. not more than
B. less than
C. more than
D. no more than

[单项选择]

We cannot feel speed. But our senses let us know that we are moving. We see things moving past us and feel that we are being shaken. We can feel acceleration, an increase in speed. But we notice it for only a short time. For instance, we feel it during the take-off run of an airplane. We feel the plane’s acceleration, because our bodies do not gain speed as fast as the plane does. It seems that something is pushing us back against the seat. Actually, our bodies are trying to stay in the same place, while the plane is carrying us forward.
Soon the plane reaches a steady speed. Then, because there is no longer any change in the speed, the feeling of forward motion stops.

How do you explain that we are moving（　）.
A. By watching things move past.
B. By feeling the speed.
C. By feeling ourselves being shaken.
D. D. Both A and

[单项选择]It is very （） of you to let us know you were going to be late. Otherwise, we（）on time.
A. considerate...wouldn’t have begun
B. inconsiderate...would have begun
C. considerable...wouldn’t have begun
D. inconsiderable...wouldn’t begin

[填空题]I would like (let) ______ you know this piece of exciting news.

[单项选择]"Let us go, （　）" the Smith said to the officer.
A. will you
B. won’t you
C. shan’t we
D. don’t we

[多项选择]They’ll let us know before the end of the month,______

[单项选择]If you______ change your mind, please let us know.
A. shall
B. should
C. will
D. would

[填空题]Would you know how to help
Every year, thousands of drivers and passengers die in the few minutes after an auto collision. Many of these victims would survive if only the first people on the scene knew how to react in emergencies. How can you help an accident victim, even before treating injuries Turn off the ignitions (点火装置) of any wrecked (遇难的) cars to reduce the risk of fire. This simple step could keep a bad collision from becoming much worse. Remember: check for fire, downed wires or spilled gasoline before getting too close to a wreck. And never move an injured driver to get to his keys. Learn more emergency warning in the Crash Course Book, free from Shell station. Pick one up at your nearest Shell station or call 376-200.
1) Many of these victims died because the first people on the scene did not know how to (46) .
2) You should turn off the ignitions of any wrecked cars in order to reduce the (47) , then you should check for fire,