Mathematics _____ the language of science. [ ]
a. is
b. has been
c. are
d. have been
a
( )是路由器通过路径选择算法为网络上的路径产生一个数字。
阳虚痰饮不会见到的舌象是()
A.舌淡白苔薄润
B.舌淡胖苔白腻
C.舌淡白苔灰腻
D.舌淡白苔滑
E.舌红苔腻微黄