颏唇沟
A．鼻外侧之长形凹陷B．鼻面沟和唇面沟合称C．两侧前鼻孔之间的隆嵴D．上唇和颊部之间的斜形凹陷E．下唇和颏部之间的横形凹陷
参考答案：E
—Why are most children under too much pressure?
—Because their parents always compare them ＿＿＿ others.
A. with B. by C. to
当某种疗法能延长某病的生存期但不能使其彻底治愈时，将出现（）
A.该病的发病率将升高
B.该病的死亡率将降低
C.该病的患病率将升高
D.该病的发病率将降低
E.该病的患病率和发病率都降低
