()是一般淡水水中含量最多的阳离子
A.Mg2+
B.Na+
C.NH4+
D.Ca2+
E.K+
参考答案:D
I suggest those who would like to learn about the event_____ the report in yesterday’s newspaper, because the report has_____ the event thoroughly.
A.read, included
B.reading, covered
C.read, covered
D.reading, included
阻断催吐化学感受区的D2受体可产生()。
A.抗精神病作用
B.镇吐作用
C.体温调节失灵
D.帕金森综合征
E.巨人症