隧道洞内施工测量时，供衬砌用的临时中线点间距不宜大于( )。
A. 10m
B. 9.5m
C. 9m
D. 8.5m
桥梁桩基础钻孔方法中，采用( )可以保证成孔垂直度和孔位。
A. 正循环回转钻孔
B. 旋挖钻机钻孔
C. 潜水钻机钻孔
D. 冲抓钻孔
What can be inferred from Beth's story
A. Prejudice against women still exists in some organizations.
B. If people want what they deserve, they have to ask for it.
C. People should not be content with what they have got.
D. People should be careful when negotiating for a job.
The first and most important thing parents should do to help their children is ______.
A. to provide them with a safer environment
B. to lower their expectations for them
C. to get them more involved socially
D. to set a good model for them to follow
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