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【单选题】A．CD2、CD3、CD4、CD7、CD8B．CDl0、CDl9、CD20C．CDl6、CD56D．CDl3、CDl4、CDl5、CD33E．TdT、CD33、CD34 T细胞及其肿瘤的免疫标记特征是：
A.
A．
B.
B．
C.
C．
D.
D．
E.
E．
【单选题】E Reading is not the only way to gain knowledge of the work in the past. There is another large. reservoir which may be called experience, and the college students will find, that every ...
A.
The college students have trouble separating good plants from wild grass.
B.
Craftsmen’s experience is usually unscientific.
C.
Craftsmen don’t like teaching the contemptuous (傲慢的) college students.
D.
Traditional practices are as important as experience for the college students.