断面沾水,即呈乳白色隆起,粉末嗅之作嚏。此药材是
A.麝香
B.牛黄
C.熊胆
D.蟾酥
E.蛤蟆油
参考答案:D
解析:断面沾水,即呈乳白色隆起,粉末嗅之作嚏。此药材是蟾酥。故答案选D。
I tired last Friday because I did nothing. [ ]
A. am
B. was
C. wasn't
(0101)2与(0111)2的和为()。
A.(1011)2
B.(1100)2
C.(1000)2
D.(1101)2