设集合M={x|0<x≤3},N={x|0<x≤1},那么“a∈M,是“a∈N”的[ ]
A.充分不必要条件
B.必要不充分条件
C.充要条件
D.既不充分也不必要条件
答案:B
用所给动词的正确形式填空。
l. Her family invited me_____ (stay) with them for a few weeks.
2. I need _____(do) some shopping on my way home from work.
3. I've been very busy since I_____ (come) back from holiday.
4. Can you_____ (read) that thing from this dis tance?
5. Clare ____(be) five years old next month.
不符合细菌性痢疾诊断的粪便检查是()
A.黏液以白细胞为主
B.破碎细胞多见
C.可见大量肠黏膜上皮细胞
D.巨噬细胞多见
E.血腥臭味