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【单选题】
下列哪项不符合矫治器的基本要求A.
容易洗刷，便于清洁，不影响口腔卫生
B.
矫正器对口腔软，硬组织及颌面部无损害
C.
恢复缺损部位的外形，改善面容
D.
不与唾液起化学反应，不影响牙颌
E.
体积尽量小巧，舒适
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反馈参考答案：
举一反三
【单选题】______ that the demand for power continues to rise at the current rate, it will not he long before tradi-tional sources become inadequate.
A.
Concerning
B.
Ascertaining
C.
Assuming
D.
Regarding
【单选题】Hardly ______ his speech when he saw the audience rise as one.
A.
had he finished
B.
did he finish
C.
he finished
D.
he had finished
【简答题】A．He wants a pay rise. B．He wants better working conditions. C．He wants to get a higher position. D．He wants to travel more in his work.
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