The nurse is teaching breast self-examination (BSE) to a college student. The nurse knows that the client understands the best time to examine her breasts when she says:

A. "I’ll examine my breasts 1 week after my period starts. "
B. "I’ll perform a BSE just before my period starts. "
C. "I must examine my breasts the same time each day. "
D. "Every time I shower I’ll do a breast examination. "

正常人尿液中可能见到的是（）

A.红细胞

B.白细胞

C.鳞状上皮细胞

D.透明管型

E.以上都可以