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【多选题】
To make cooperative learning a success, there must be some kind of "glue" that holds the group together. Group members .A.
must feel they need one another and want to help each other learn
B.
must have a personal stake in the success of the group
C.
must have the skills necessary to make the group work effectively must have the skills necessary to make the group work effectively
D.
can regularly analyze the group's strengths and weaknesses to make adjustments as needed
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举一反三
【单选题】正常人血中胆红素的主要来源是
A.
骨髓内血红蛋白分解
B.
骨髓内在红细胞成熟前血红素分解
C.
周围血中红细胞被裂解
D.
肝肾内铁卟啉蛋白产生
E.
骨髓内新生红细胞分解
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