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【单选题】
In calculating GDP, household production isA.
included as part of consumption.
B.
ignored because it is not a large amount.
C.
not included because there is no market transaction.
D.
included under employee compensation.
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【单选题】The best moment for the football star was he scored the winning goal.
A.
when
B.
where
C.
how
D.
why
【简答题】路由选择是在OSI模型中的__________层实现的。
【简答题】He was (disappoint) ______ to hear that the football star would not play that day.
【单选题】She looked upon the football star as her role model ______ yesterday, when she saw him taken away by the police for drug taking on TV. [ ]
A.
when
B.
since
C.
until
D.
after
【单选题】（）包括DNA疫苗和RNA疫苗，由编码能引起保护性免疫反应的病原体抗原的基因片段和载体构建而成。
A.
基因缺失疫苗
B.
核酸疫苗
C.
转基因植物疫苗
D.
合成肽疫苗
【单选题】Fans crowded the airport exit waiting for the football star.
A.
a glance of
B.
a look at
C.
a glimpse of
D.
a sight of
【单选题】The best moment for the football star was _______ he scored the winning goal.
A.
where
B.
when
C.
how
D.
why
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