用于治疗腹泻的双歧三联活菌胶囊的主要活性成分是（）

A.肠球菌

B.酵母菌

C.肠杆菌

D.双歧杆菌

E.乳酸杆菌

根据句意及所给首字母, 完成下列句子.

1. It often s          in the north of our country in winter.

2. It's so h          . Let's go swimming.

3. Look! My mother is c          in the kitchen (厨房).

4. It's c          outside. Put on your coat,please.

5. He is listening to light music. He is really r         .