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【多选题】
蔬菜采收后,在保鲜贮存过程中,常发生的感官 品质的变化有A.
失水萎蔫
B.
色泽变黄
C.
发芽抽薹
D.
霉烂 虫害
E.
后熟和衰老
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【简答题】在window系统中开启GD扩展库的方法是什么?
【单选题】听力原文： A baby spends the first year of life learning to listen. A newborn child comes equipped with a finely tuned pair of ears, but he doesn't yet know how to use them. A buzz of meaningless noise sur...
A.
Because he likes learning.
B.
Because his hearing center is still immature.
C.
Because his ears are immature.
D.
Because he wants to know how to use his ears.
【单选题】Learning to listen _________ — not just _________ — doesn’t come easily to him.
A.
passively, patiently
B.
patiently, patiently
C.
patiently, passively
D.
passively，passively
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