乳牙期前牙反的治疗目的在于()
A.改善骨面型
B.排齐牙列
C.恢复下颌正常咬合位置
D.促进上颌骨发育并抑制下颌过度发育
E.改善前牙牙轴
参考答案:D
.If their marketing plans succeed, they ____ their sales by 30 percent.
A.will increase
B.have been increasing
C.have increased
D.would be increasing