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【多选题】
描述疾病流行强度的常用指标包括A.
暴发
B.
散发
C.
流行
D.
长期变异
E.
大流行
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】He ____ Tokyo, for I saw him a short time ago.
A.
must have gone to
B.
mustn't have been to
C.
can't have gone to
D.
can't have been to
【简答题】世界上实行养老保险制度的国家可以分为三种类型:()、()、()。
【单选题】He ______ to Tokyo, for I saw him a short time ago.
A.
must have gone
B.
mustn't have gone
C.
can't have gone
D.
shouldn't have gone
【单选题】—_____ your brother speak Japanese? —Yes, he has learnt it in Tokyo for three years. [ ]
A.
Should
B.
Must
C.
Can
D.
May
【单选题】He will stay in Tokyo for ___________ days.
A.
a pair of
B.
a kind of
C.
a couple of
D.
a piece of
【单选题】He ______ Tokyo for two weeks.
A.
has left
B.
has been away from
C.
has been left
D.
left
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