设计师作为美的创造者和美的使者,应当以()作为自己的根本职责。
参考答案:创造
—When I first got to Harvard, my awkward English brought me great trouble.
——Oh, dear, it _______a struggle for you to keep up with other students.
A.might be
B.can be
C.could have been
D.must have been
义齿撬动或摆动的原因是
A.支托移位形成支点B.基托边缘过长或过锐C.基托过厚过大D.卡环臂进入基牙倒凹区过深E.咬合过高,基牙负担过重