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【单选题】
He caught the train with a few minutes _______.A.
spared
B.
sparing
C.
to spare
D.
spare
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举一反三
【简答题】什么是植物营养的最大效率期和植物营养的临界期？
【单选题】It is implied that some computer consultants consider Govnet to be almost impossible because
A.
it will entail considerable cost.
B.
there isn't a reliable network infrastructure yet.
C.
it will be difficult for Govnet to fit into the Internet.
D.
no telecommunications company can afford it.
【单选题】It is implied that it is the government's intention to ______.
A.
improve the quality of TV programs
B.
try to offer greater choice over public service systems
C.
make people realize that some lovers arc interchangeable
D.
encourage the downloading of a variety of ring tones
【简答题】什么是植物营养期、作物营养临界期和最大效率期？它们在施肥中有何指导意义？
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