镜下血尿判断标准是新鲜尿离心沉淀后,每高倍镜视野红细胞数为
A.>3个
B.>5个
C.>8个
D.>10个
E.>20个
参考答案:A
有关月经初潮以下哪项是正确的()。
A.月经初潮标志着卵巢发育成熟
B.初潮年龄与人民生活水平关系不大
C.初潮后月经常不规律,因此不可能受孕
D.初潮年龄在14~16岁
E.月经初潮标志着青春期开始
—Any advice on how to protect pupils’ eyesight?
—It’s helpful for them not to ____ bright light.
A.look on
B.look into
C.look for
D.look through