属于“十三经”之一的辞书是()
A.《尔雅》
B.《说文》
C.《方言》
D.《释名》
E.《左传》
参考答案:A
The reason he was late for school was he had to send his mother to a hospital.
A.which; that
B.why; that
C.for which; because
D.what; why
抗体的多样性决定于
A.淋巴细胞的凋亡
B.淋巴细胞的种类
C.淋巴细胞的数量
D.淋巴细胞的来源
E.淋巴细胞的基因