硝酸纤维类胶片等物质缓慢分解，温度上升时，要立即（）。
A.用水降温
B.用泡沫覆盖
C.用二氧化碳冷却
D.搬出库房外，散热摊凉
参考答案：D
What an important part the Internet_______ in our life! One can hardly imagine____ life would be like without it.
A．has; how
B．is; however
C．uses; what
D．plays; what
公猫去势时，切口应在阴囊的
A．颈部
B．底部
C．左侧
D．右侧
E．阴囊前方
