阅读理解。

     My father has a great sports collection. He loves sports very much. And he loves all balls. He

likes playing basketball and volleyball. And he likes playing baseball and tennis. He also likes watching

ball games. How many balls does he have? He has 15 basketballs, 12 baseballs, 10 tennis rackets, 8

volleyballs and 14 baseball bats and many other balls.

1. ______ has a great sports collection.            

A. My father                      

B. My grandfather

C. My uncle                      

D. My friend

2. He loves ______ very much.       

A. sports    

B. balls    

C. music    

D. A and B

3.He likes playing ______ and ______.                                                                                         

A. volleyball, baseball          

B. soccer, basketball            

C. ping-pong, baseball          

D. soccer, ping-pong

4. He has ______ tennis rackets.     

A. 15          

B. 12          

C. 10        

D. 8

5. How many soccer balls does he have?    

A. 5.          

B. 12.      

C. 14.      

D. We don't know.

秦皮含有荧光的成分是（）

A．4-甲氧基水杨醛

B．七叶树苷和七叶树素

C．牡丹酚

D．α、β-桉油醇

E．松酯醇二-β-D-葡萄糖苷酚