Li Lei is a student __1__ Class Two, Grade Seven. He likes football very __2__. He often plays it after school. And he often goes home__3__. His home is __4__the school. His mother doesn’t worry __5__ him.

One Sunday morning Li Lei goes to a shop__6__his mother. The shop is very__7__. There are many things__8__it. They get some things. Then his mother says to Li Lei, "What do you _9_ ?"

"I want to get a red blouse," says Li Lei. "A red blouse?" asks his mother. "You are a __10__. You can’t wear a red blouse."

Li Lei smiled"OK, please get me football clothes."

1. A. at          B. of             C. on             D. with

2. A. good            B. fine           C. well          D. much

3. A. early            B. back          C. late           D. soon

4. A. near             B. in             C. on             D. to

5. A. for               B. with          C. about               D. at

6. A. to          B. from         C. on             D. with

7. A. small            B. big            C. nice          D. good

8. A. on         B. in             C. at              D. under

9. A. want             B. get            C. put            D. take

10. A. girl             B. woman      C. boy           D. man

将牛奶和姜汁混合，待牛奶凝固便成为一种富有广东特色的甜品——姜撞奶。牛奶的凝固是由于奶内的某些蛋白质由可溶的状态转变成不溶的状态。为了掌握牛奶凝固所需的条件，某同学将不同温度的等量牛奶混入对应温度的一些新鲜姜汁中，观察混合物15min，看其凝固快慢，结果如下表：

(1)根据以上姜汁使牛奶凝固的结果，描述牛奶温度对凝固速率的影响。_______。

(2)如何解释新鲜姜汁在牛奶凝固过程中所起的作用？___________。

(3)如果要探究令牛奶和姜汁混合物凝固的较准确的最适温度，应在上面实验中如何改进？___________。