[-A69] The country has already sent up three unmanned spacecraft,the most recent _______ at theend of last March.A.has been launched B.having been launched C.being launched D.to be launched 翻译并分析

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[-A69] The country has already sent up three unmanned spacecraft,the most recent _______ at theend of last March.A.has been launched B.having been launched C.being launched D.to be launched 翻译并分析

[-A69] The country has already sent up three unmanned spacecraft,the most recent _______ at theend of last March.A.has been launched B.having been launched C.being launched D.to be launched 翻译并分析
[-A69] The country has already sent up three unmanned spacecraft,the most recent _______ at the
end of last March.
A.has been launched
B.having been launched
C.being launched
D.to be launched
翻译并分析

[-A69] The country has already sent up three unmanned spacecraft,the most recent _______ at theend of last March.A.has been launched B.having been launched C.being launched D.to be launched 翻译并分析
翻译:国家已经发射升空了三艘无人宇宙飞船,最近的一艘去年三月底已经发射了.
此题考查独立主格结构.
1.题中的逗号前后没有连词and/so/but等,说明后面的不是并列句;也没有which等关系代词,说明后面也不是定语从句.
2.先排除A,它是句子的谓语结构,要求逗号后面必须是一个句子;
剩下的BCD均采用动词非谓语形式,说明逗号后面的成分为独立主格结构.
因为在选项前面有独立的逻辑主语the most recent(spacecraft).
3.选用C,句意为“最近的(一艘飞船)正在被发射”,即其强调be launched该动作正在发生,但是和前面的句意has already sent up“已经发射”矛盾;
选用D,句意为“最近的(一艘飞船)将要被发射”,同样和前面的句意has already sent up“已经发射”矛盾.
4.B句意为“最近的(一艘飞船)已经被发射”,和前面句意相符,为正解.