慢性腹痛临床应注意以下几点，除外
A．腹痛的部位
B．腹痛的性质
C．与遗传的关系
D．腹痛与体位的关系
E．伴随症状
参考答案：C
According to some doctors, one of the ways to delay the aging process is to make sure that our brains
get enough ________. [ ]
A. assistance
B. sport
C. experience
D. exercise
电，气焊在同一场地作业时，氧气瓶必须采取（）措施，乙炔气瓶要有接地措施。
s, one of the ways to
delay the aging process is to make sure that our brains