皮皮学，免费搜题
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【多选题】
小球弹起来的时候都经历了哪些力的作用()。A.
重力
B.
反弹力
C.
空气阻力
D.
惯性
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】The naught boy ____ to me that the hen which ____ there just now had ____ two eggs the day before.
A.
lied; lay; laid
B.
laid; lay; lain
C.
lied; laid; lain
D.
laid; laid; laid
【单选题】He _____there and _____to me that the hen _____ an egg this morning.
A.
laid; lay; laid
B.
lay;lied;had laid
C.
lied;laid;lied
D.
lay;lied;laid up
【单选题】The naughty boy _____ to me that the hen _____ there just now had ____ two eggs the day before.
A.
laid; laid; laid
B.
laid; lay; lain
C.
lied; laid; lain
D.
lied; lying; laid
【单选题】The hen ______ there _____that she_____ two eggs once.
A.
lying; laid; laying
B.
lying; lied; laid
C.
laying; lied; laid
D.
laying; laid; lied
【简答题】表示物质的量浓度的符号是____
【单选题】The hen _____ there,_____ eggs.
A.
laid;laying
B.
lay;laing
C.
laid;lying
D.
lay;lying
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