题目内容：

In high school I had a math teacher, Mrs. Davies, who took her job seriously and expected her students to put forth the same degree of commitment. Strict but fair, she held our attention with her time-proven approach. One of her      was for students who were more advanced academically. I chose to       it and soon realized that the course was a bit over my head. I      with the complex problems that others seemed to learn without much effort.

One Friday we were tested       our ability to use a theorem（定理）that no one in the class thoroughly understood. The teacher would       our papers based on our ability to progress through the problem which easily filled two pages of formulaic notations（公式符号）. I was absolutely       . Finally, I didn't use the required theorem. Instead, I decided to use more familiar theorems to arrive at an      . I knew I had failed because I hadn't done the       assignment. I became resigned to my fate．

Our test papers were       back the following Monday. Everyone received a "C" except for me. To my surprise, I received an "A". I      that there must be a mistake. I watched       as the teacher approached my desk, smiled, and asked for my test        back．She then went back to copy my work onto the blackboard,      the class how I had arrived at the correct answer．"Mathematics is meant to be a creative tool, pushing our minds to a rewarding answer," she said with confidence.        I didn't use the required theorem, she seemed genuinely proud of how I'd worked through the problem. The class saw her fold my test paper and put it into her textbook. She announced that it would be       with future classes.

My teacher would have been justified in giving me a       grade. Instead, she used the       to deeply influence a student who often struggled. And after forty years, I still cherish the       ．It helped change my self-image. I       up to a broad boundary of possibilities which has made my life an adventure. She understood that teaching went beyond strict demands and could be used to      . Thank you, Mrs. Davies．

1.A. ways     B. tasks       C. tests          D. classes

2.A. run     B. take       C. teach        D. like

3.A. compared B. struggled    C. connected    D. argued

4.A. on     B. at           C. of         D. for

5.A. explain B. collect       C. print     D. grade

6.A. tired     B. curious      C. lost        D. content

7.A. effect     B. end       C. answer      D. interest

8.A. completed B. proved    C. fixed     D. required

9.A. handed B. held       C. thrown     D. dated

10.A. hoped    B. assumed   C. declared  D. dreamed

11.A. angrily B. regretfully   C. Disappoint   D. nervously

12.A. paper B. score       C. question     D. method

13.A. helping B. following   C. showing     D. praising

14.A. Since B. Unless       C. Though     D. Because

15.A. shared B. exchanged   C. practiced     D. checked

16.A. friendly B. failing       C. corrected     D. wrong

17.A. Possibility  B. creation     C. intention D. opportunity

18.A. change    B. memory     C. school  D. life

19.A. opened    B. kept     C. made      D. looked

20.A. learn        B. survive     C. inspire      D. manage