膳食中碱性物质主要来源于
A．蔬菜
B．米饭
C．面粉
D．肉类
E．食盐
参考答案：A
—_____ alarm clock, ______CD player and some CDs are on the desk in my room. [ ]
A. An; the
B. An; a
C. An; /
D. A; the
直流炉给水含铁量超标，有哪些危害？
