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【单选题】
图 中所示为何种寄生虫虫卵?A.
未受精蛔虫卵
B.
钩虫卵
C.
并殖吸虫卵
D.
姜片虫卵
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反馈参考答案：
举一反三
【单选题】I got in touch with Charles ________ I received his letter.
A.
when immdeiately
B.
immediately
C.
soon
D.
suddenly
【单选题】— Have you got in touch with Tom? — Oh, sorry.I couldn't________his phone number at that time. [ ]
A.
think out
B.
think about
C.
think of
D.
think over
【单选题】I got in touch with Charles ________ I received his letter.
A.
when immediately
B.
soon
C.
immediately
D.
suddenly
【简答题】在茎的初生结构中,初生韧皮部的分化方式为_____,先分化的是_____韧皮部,后分化出来的是_____韧皮部,初生木质部的分化方式为_____。
【单选题】I got in touch with Charles ________ I received his letter.
A.
when
B.
soon
C.
immediately
D.
suddenly
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