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问题 单项选择题

对胼胝体的描述正确的是（）

A.位于豆状核的内侧

B.位于尾状核的内侧

C.位于岛叶的内侧

D.由大脑的连合纤维组成

E.位于豆状核与屏状核之间

答案

参考答案：D

选择题

He _____ football regularly for many years when he was young. [ ]

A. was playing

B. played

C. has played

D. had played
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选择题

在无色透明的强酸性溶液中能大量共存的离子组是（  ）

A．Ca2+ Na+

B．K+Na+

C． Na+Cl–

D．Ba2+Mg2+ Cl–
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