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【简答题】
在一块并排10垄的田地中，选择2垄分别种植A、B两种作物，每种作物种植一垄．为有利于作物生长，要求A、B两种作物的间隔不小于6垄，则不同的种植方法共有多少种？
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举一反三
【单选题】I need ______ to do my homework. [ ]
A.
half an hour
B.
half a hour
C.
half hour
D.
half hours
【单选题】Don't leave you work,__ . A. done half B. half done C. a half done D. done a half
A.
done half
B.
half done
C.
a half done
D.
done a half
【单选题】His car broke down when he was only ______ home.
A.
a half way
B.
half. a way
C.
half way
D.
half way to
【简答题】A．half an B．half a C．half of
【单选题】The boy lay on bed, with his eyes ____. [ ]
A.
half close
B.
half closed
C.
half closing
D.
to half close
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