对颌骨黏液瘤的治疗目前多主张（）。
A.肿瘤刮除
B.局部包膜外剥离
C.局部骨质方块切除
D.局部与区域淋巴结联合根治
E.放射治疗
参考答案：C
Roger had just walked into his office and that was when he was told that his plan had finally been approved. Which of the following can be instead of the underlined(划线的) part to make the sentence better.
A．and then they told him
B．when it was learned by him
C．and then he learned
D．when he learned
下列环境作用等级中，均属于严重腐蚀环境的是（）。
A.L3、H3、H3、D3、D4和M3
B.L3、H2、H3、D3、D4和U3
C.L2、H3、H3、D3、D4和M3
D.L3、H3、H3、D2、D3和M3
