HBV感染进入后期与传染减低的指标是()
A.HBsAg(+)
B.抗-HBs(+)
C.HBeAg(+)
D.抗-HBc(+)
E.抗-HBe(+)
参考答案:E
Many students don’t know how to ______ stress(压力).
A.agree with
B.deal with
C.care for
D.ask for
47°39′+67°31′=( )