搜题请搜索小程序“爱下问搜题”
问题
选择题
过量饮酒后，心跳和呼吸出现异常，说明酒精已毒害了 [ ]
A．脊髓
B．大脑
C．小脑
D．脑干
答案
答案：
D
选择题
决定元素种类的是 [ ]
A．核电荷数
B．中子数
C．电子数
D．原子量
查看答案
选择题
— Mary has changed a lot in the last few years.
— ______.
A. So has her sister
B. So was her sister
C. So did her sister
D. So is her sister
查看答案
