单项选择题

A．Lifted heavy box.
B．Put hundreds of bottles and tins and packets on shelves.
C．Lifted bricks.
D．Lifted bottles and boxes.
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单项选择题
A．Because they are sister and brother.B．Because they lost connections for a long time and he wants to keep in touch with her.C．Because they are best friends.D．Because Mike wants some advice from Sue for job interview.
A．Because they are sister and brother.
B．Because they lost connections for a long time and he wants to keep in touch with her.
C．Because they are best friends.
D．Because Mike wants some advice from Sue for job interview.
单项选择题
Rocker fuels are more explosive than methane gas because of ______.
A．the temperature at which combustion takes place
B．the degree of oxidation accomplished by the combustion process
C．the presence of inhibitors
D．the great burning velocity
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