有关额外成绩报告，下列说法错误的是（）。
A.只能通过网上申请
B.成绩报告有效期不变
C.收到申请后20天内邮寄
D.申请提交后应及时付款
参考答案：C
People who ______ athletic sports are generally believed to _____ strong bodies, firm muscles but
dull heads, which of course is not the case. [ ]
A. take part in; be
B. like; be
C. join ; have
D. go in for; have
引起脑萎缩的最常见原因是（）
A．脑水肿
B．脑外伤
C．脑动脉粥样硬化
D．脑脓肿
E．脑结核
