收集资料时,资料来源的途径包括下列哪几项()。
A.同事
B.家庭成员
C.朋友
D.亲戚
E.患者自己
参考答案:A, B, C, D, E
When Maria was two, she could _____ read _____write. [ ]
A. both, and
B. either, or
C. neither, nor
单唇形花冠