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【单选题】
Which of the following is true according to the passage?A.
Although the nature of earthquakes and earthquake belts are understood by most people, there is still not a widespread awareness of earthquake hazards.
B.
It will probably be many years before we can predict earthquakes accurately and the control of earthquakes is even farther away.
C.
Scientists are looking very closely at the most active fault system in the United States, such as the Rocky Mountain Arsenal earthquakes.
D.
Experimentation has shown that the earthquake activity has no connection with the fluid injection.
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皮皮学刷刷变学霸
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【单选题】At weekends we help mother with housework in the kitchen _____ she can enjoy herself by searching the Internet. [ ]
A.
after
B.
until
C.
that
D.
so that
【简答题】On weekends we are usually allowed to go to bed later than usual to watch TV.
【单选题】On weekends we like to hang out with _________ friends. [ ]
A.
we
B.
us
C.
ours
D.
our
【简答题】( )是指国家利益不受威胁、侵害和破坏的客观状态。
【单选题】We are unable to provide housekeeping services ( ) weekends.
A.
In
B.
At
C.
On
D.
during