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【单选题】
某发展中国家,人口总数为69 458万人,老年人口为4 220万人,该国属于A.
幼年型国家
B.
青年型国家
C.
成年型国家
D.
中年型国家
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反馈参考答案：
举一反三
【单选题】_______ after a long walk,Henry called and said he couldn't come to the meeting. [ ]
A.
Having worn out
B.
Being worn out
C.
To wear out
D.
Worn out
【单选题】The author says Johnson found it very difficult to walk because ______.
A.
he couldn't control his legs
B.
he generally wore irons round his legs
C.
people always stared at him
D.
it hurt his friends to watch him
【单选题】________ out after a long walk,Mike called and said he couldn’t come to the party.
A.
Having worn
B.
Being worn
C.
To wear
D.
Worn
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