为了考察两个变量x和y之间的线性相关性，甲、乙两个同学各自独立地做了10次试验和

阅读理解。

     Look at this It’s a blue bag. It is my bag. What’s in it? Look, this is my English book. It’s blue, too.

My Chinese book is also in my bag. It is yellow. This is my pencil case. It’s big and nice. I like English

and Chinese. My bag is my good friend.

1. My bag is______ .

A. yellow

B. blue

C. nice

D. big

2. —What’s in my bag? 

    —______.

A. My English book

B. My Chinese book

C. My pencil case

D. All the three

3. My Chinese book is also in my bag. "also" means(意思是)______ .

A.也

B.颜色

C.不在

D.放进

4. Myis my good friend______.

A. Chinese book

B. English book

C. pencil case

D. bag

5. My pencil case is______.

A. yellow

B. blue

C. big and nice

D. my friend

3位具有氯原子取代的头孢类药物（）

A．头孢克洛

B．头孢哌酮钠

C．头孢羟氨苄

D．头孢噻吩钠

E．头孢噻肟钠

血清与血浆的区别是（）

A.血清缺少某些凝血因子

B.血浆缺少某些凝血因子

C.血清缺少凝血酶

D.血浆缺少凝血酶

E.血清缺少纤维蛋白

教育原初的存在状态是（）

A.生活式教育

B.学校式教育

C.科学式教育

D.灌输式教育