学龄前儿童每日增加1KG体重约需（）蛋白质积累
A．140
B．145
C．155
D．160
参考答案：D
Scientists have decided to declare ____ war on AIDS in order to make ____ breakthrough in treating it.
A．a, a
B．/, a
C．a, the
D．/ , the
均布冰荷载
