原式=115×(-16)×311×45,
=-(115×16×311×45),
=-225.
It is nice to hear from a close friend. ______, we last met more than thirty years ago.
A.What’s more
B.That is to say
C.In other words
D.Believe it or not
阿片属于
A.麻醉药品
B.毒性药品
C.第二类精神药品
D.放射性药品
E.戒毒药品