某女,27岁,宫颈粘液分泌减少,而且变稠厚,涂片中出现椭圆体结晶,此种变化受哪一种激素影响()
A.雌、雄激素协同
B.雌激素
C.雄激素
D.孕激素
E.泌乳素
参考答案:D
Young drivers under 25 have the highest number of accidents while those over 50 have________.[ ]
A.the less
B.the fewest
C.the least
D.the fewer
教师应具备的激励性人格特征包括()
A.热情
B.期望
C.可信任感
D.乐观