题目内容：

From the window of my room, I could see tall cotton-rose hibiscus（木棉树）. In spring, when green leaves were half ________ in mist, the tree looked very attractive, ________ with red flowers. This inspiring neighbor of mine often ________ my mind working. I regarded it as my best friend ________.

However, when I opened the window one morning, to my amazement, the tree was almost ________ beyond recognition as a result of the storm ________ the night before. I was seized with a sudden sorrow at the thought “all the flowers are to fall”. I could not help ________ with emotion: the course of life never runs ________, for there are so many ups and downs ________ twists and turns. The process of my life saw my beloved friends parting one after another. Isn’t it ________ to the flowers falling off the tree in the wind?

This event ________ from my memory as time went by. One day after I came home, I found the room hard to breathe in and opened the window ________. Something outside caught my ________ and impressed me. It was plum tree（李树）with flowers ________ beautifully by the sunset. The surprise discovery filled me with pleasure. I wondered ________ I had no idea of some tough life restarting over the fallen petals（花瓣）when I felt sorry for the hibiscus.

When the last petal ________, all the admiration for the hibiscus disappeared as if nothing was left, until the landscape was again decorated with the red plum flowers to ________ people of life’s alternation and continuity. Can't it be said that life is actually a symphony, a harmonious ________ of loss and gain.

Standing by the window lost in thought for a long time, I realized that no scenery in the world remains ________ As long as you keep your heart bathed in the sun, every dawn will present a fine start for you and the world will always be about ________ hopes.

1.A. buried    B. placed    C. hidden    D. trapped

2.A. covered    B. surrounded    C. dotted    D. marked

3.A. set    B. prevented    C. observed    D. bore

4.A. regularly    B. gradually    C. narrowly    D. generally

5.A. blank    B. vacant    C. bare    D. empty

6.A. effect    B. damage    C. fault    D. feast

7.A. teasing    B. yelling    C. swearing    D. sighing

8.A. lucky    B. smooth    C. simple    D. cozy

9.A. as well as    B. rather than    C. as many as    D. regardless of

10.A. due    B. contrary    C. similar    D. familiar

11.A. sank    B. faded    C. matured    D. quit

12.A. casually    B. actively    C. merely    D. fiercely

13.A. soul    B. nose    C. eye    D. mind

14.A. set off    B. set up    C. put up    D. put off

15.A. when    B. if    C. how    D. why

16.A. slipped    B. quit    C. dropped    D. broke

17.A. rid    B. warn    C. convince    D. remind

18.A. composition    B. dilemma    C. division    D. conflict

19.A. unlimited    B. unspoiled    C. unchanged    D. unexpected

20.A. fresh    B. practical    C. previous    D. vain