单项选择题


Passage Two
Questions 29 to 31 are based on the passage you have just heard.

A．Agriculture in the industrialized world.
B．Cultivated crops.
C．The association between roses and humans.
D．The discoveries of certain grasses.
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单项选择题
A．They have to break into the car.B．Five percent of the cars are left unlocked.C．They sometimes find car keys in the ignition and simply get in.D．They knock out the driver and get the car away.
A．They have to break into the car.
B．Five percent of the cars are left unlocked.
C．They sometimes find car keys in the ignition and simply get in.
D．They knock out the driver and get the car away.
单项选择题
A．One month.B．One month and a half.C．Two months.D．Two months and a half.
A．One month.
B．One month and a half.
C．Two months.
D．Two months and a half.
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