老年人饮食调养中哪项是错误的（）。
A.品种多样
B.每餐要饱
C.清淡熟软
D.细嚼慢咽
E.进食时心情愉悦
参考答案：B
Mary was not born in China, _____?[ ]
A. didn't she
B. wasn't she
C. was she
D. did she
下列哪项属于真核细胞型微生物的特点（）
A.无核仁、核膜
B.有核仁、核膜
C.有核仁、无核膜
D.无细胞器
E.无染色体
