口腔保健咨询时,对于第一恒磨牙窝沟封闭增长的适宜时间是()。
A.6~7岁
B.7~9岁
C.6~8岁
D.7~8岁
E.8~9岁
参考答案:A
We shouldn’t ignore what happens________it is difficult for us to accept some stories.[ ]
A.even if
B.as if
C.on condition that
D.now that
深层搅拌桩定额是否包括开挖地槽的费用?