葡萄胎排空后尿妊娠试验转阴性时间最迟不超过()
A.4周
B.6周
C.8周
D.10周
E.12周
参考答案:C
To live with a high ideal is a successful life. It is not what one does, ________ what one tries to do, that makes a man strong.
A.nor
B.but
C.or
D.and
人们日常生活中的商品的价值来源是______。
A.技术 B.资本 C.劳动 D.自然资料的属性