John's phone is white, but _________ is yellow.[ ]
A. my
B. her
C. mine
D. your
答案:C
吸入性糖皮质激素受体亲和力愈高,其作用会()。
A.越强
B.越弱
C.不变
D.全部都错
简述荀子对教师地位、作用、条件的论述。