下列强度最低的胶凝材料是( )。
A.建筑石膏B.菱苦土C.水玻璃D.石灰
参考答案:D
Miss Green isn't in the office. She to the library.[ ]
A. has gone
B. went
C. will go
D. has been
苔黄而质腻多见于()
A.食积化热
B.热入营分
C.寒湿内停
D.痰饮阻滞
E.外感风寒