讨论生物的基本特征时,有人列举了以下事实,正确的是 [ ]
A.生物都由细胞构成
B.生物都能生长繁殖
C.生物都能进行光合作用
D.生物都有消化系统
答案:B
With the country’s population reaching 1.6 billion in the mid of this century, most of China’s rivers, including the Yellow River, ________.
A.is drying up
B.will be drying up
C.dry up
D.have dried up
寒热错杂,正气虚弱的久泻久痢,宜选用()
A.四神丸
B.真人养脏汤
C.乌梅丸
D.白头翁汤
E.芍药汤