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【简答题】
请将你观察到的切片按发育先后顺序进行排序。
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皮皮学刷刷变学霸
举一反三
【单选题】Young people often blame that ______.
A.
their parents don't understand the modern society
B.
their parents always give them too much pressure
C.
their parents don't show enough concern about their health
D.
their parents don't earn enough money to support them financially
【简答题】P33 -1 简述气硬性胶凝材料和水硬性胶凝材料的区别。
【简答题】Important people don’t often have much free time as their work ________ all their time. A) takes away B) takes over C) takes up D) takes in
【简答题】第7章作业
【单选题】—People often don't appreciate what they have, do they? —No, _________ they lose it.
A.
if
B.
after
C.
until
D.
when
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