第二部分英语知识运用(共两节，满分45分)
第一节单项填空(共15小题，每小题1分，满分15分)
从A、B、c、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21．The experiment is______failure．But do remember that，in the face of________failure，you should still keep up good state of mind．
A．/；the；the B．a；/；the C．the；/；the D．a；/；a
Ballet is amazing; ______you go ,you are likely to find yourself going again and again.
| A．as | B．once | C．unless | D．while |
Steven’s exam results put him______the top ten students in his grade.
| A．among | B．between | C．in | D．at |
Mary was only too ready to help others, seldom, ______, refusing them when they turned to him.
| A．if never | B．if not | C．if any | D．if ever |
—I did very well in the English exam last week.
—I did______. I got a full mark.
| A．no better | B．not better | C．no worse | D．even worse |
______Three times in a row ,the boxer decided to give up fighting.
| A．Having defeated | B．To have defeated |
| C．Having been defeated | D．To have been defeated |