对于金属钠的火灾不可以采用（）灭火。
A、干粉
B、泡沫
C、砂土
参考答案：B
诊断脑外伤性“颅缝分离”，是指颅缝宽度超过（）
A.1mm
B.2mm
C.3mm
D.4mm
E.5mm
If a shop has chairs _______ women can park their men, women will spend more time in the shop.
A．that
B．which
C．when
D．where
