某女,33岁,刷牙经常出血,临床诊断为牙龈炎,应建议她多长时间做一次洁治()。
A.1~2个月
B.2~3个月
C.6~12个
D.12~24个月
E.24个月以上
参考答案:C
增加:在缺词处加一个漏字符号(∧),在该行右边横线上写出该加的词。
(∧)
删除:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。
(
\)
修改:在错的词下划一横线,在该行右边横线上写出改正后的词。
小题1:I asked him whether he will stay at home or go out that night.
小题2:I made up my mind to do my best to make a progress in English.
小题3:The boss got his workers entire in his power.
小题4:The teacher told us not make any noise then.
小题5:Her brother said he had been there half a month ago.
如图所示,重力G=50N的物体静止在斜面上,斜面的倾角?=37º,斜面对物体的静摩擦力为___________N。若斜面的倾角减小,斜面对物体的静摩擦力将___________(填“增大”或“减小”)(sin37º=0.6,cos37º=0.8)。