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【多选题】
HFile 数据格式中的 KeyValue 数据格式，下列选项描述正确的是()。A.
是 byte[]数组
B.
没有固定的结构
C.
数据的大小是定长的
D.
有固定的结构
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【单选题】We feel regretful that you ask us to allow you a commission _____ 10% on each sale.
A.
of
B.
on
C.
to
D.
/
【单选题】Americans will be regretful for ______.
A.
the extravagant ways of living in the suburbs
B.
the fast-growing developments in the suburbs
C.
the devastation caused by the economic crisis
D.
what they have done over the past few months
【单选题】When we get closer to the moon, we shall feel its gravity pulling us, but it will not be ________ the earth’s.
A.
as a strong pull as
B.
a pull as strong as
C.
as strong a pull as
D.
as strong pull as
【单选题】教学的首要任务是（ ）
A.
引导学生掌握科学文化基础知识和基本技能
B.
发展学生智力，培养学生的创造能力
C.
发展学生体力．提高学生的健康水平
D.
培养学生高尚的审美情趣
【单选题】Those who themselves to pleasure and don't work hard when they are young will surely feel regretful when they are old. [ ]
A.
range
B.
burden
C.
abandon
D.
devote
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