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【单选题】
水生演替系列 阶段及特点()A.
自由漂浮植物阶段—沉水植物阶段—浮植物阶段—直立水生植物阶段—湿生草本植物阶段—木本植物阶段
B.
沉水植物阶段—自由漂浮植物阶段—浮植物阶段—直立水生植物阶段—湿生草本植物阶段—木本植物阶段
C.
浮植物阶段—沉水植物阶段—自由漂浮植物阶段—直立水生植物阶段—湿生草本植物阶段—木本植物阶段
D.
自由漂浮植物阶段—直立水生植物阶段—沉水植物阶段—浮植物阶段—湿生草本植物阶段—木本植物阶段
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【单选题】听力原文：W: Why is Bob so tired and worn out'? M: He's been studying day and night for his final term paper! I have warned him many times to prepare earlier, but he would not listen. What does the man mea...
A.
Bob is too tired to study any more.
B.
He told Bob not to study late at night.
C.
He had often advised Bob to prepare earlier.
D.
Bob didn't hear the warning.
【简答题】Why is he so tired? He (play) basketball for five hours.
【单选题】听力原文：W: Why is Bob so tired and worn out? M: He's been studying day and night for his final term paper! I have warned him many times to prepare earlier, but he would not listen. Q: What does the man m...
A.
Bob is too tired to study any more.
B.
He told Bob not to study late at night.
C.
He had often advised Bob to prepare earlier.
D.
Bob didn't hear the warning.
【简答题】线性结构包括线性表、堆栈、队列、字符串、数组等等,其中,最典型、最常用的是( )。
【简答题】Why is he so tired?
He (play) _______________ tennis for five hours.
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