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【单选题】
根据叶片的观赏特性,下列植物哪一种属于双色叶植物?( )A.
丹桂
B.
红背桂
C.
D.
四季桂
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
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【单选题】I don’t think you’ll be able to understand this formula( 公式 ) ____________you finish school. A. as if B. only when C. even D. even when
A.
as if
B.
only when
C.
even
D.
even when
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【单选题】One can get a sunburn even________
A.
when it is absorbed by matter
B.
when it is cloudy
C.
because they can pass through solid objects D when the sunrays are fierce E．when a change in the nucleus of an atom takes place F．when electron rearrangement takes place
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