Common sense requires us to get away from the concept that national boundaries are frontiers _________ knowledge may not spread.
A. with which B. across with
C. through which D. from which
—Could you say something about Turkey’s downing of the Russian fighter jet?
—Sorry. It ______ by a group of experts and will be made clear the moment they get the answer.
A. has been investigated B. is being investigated
C. was investigated D. was being investigated
Just as Tu Youyou once commented, “In order to make some achievements and ______ yourself in your field, there are certain things you must do.”
A. bury B. promote
C. distinguish D. behave
With the word PM 2.5 ________ appearing in media reports, people pay greater attention to it and seek health tips for smoggy days.
A. immediately B. consequently
C. permanently D. constantly
Finally, developing teenagers’ critical thinking should be a(n) ______ for education committed to helping students become competent citizens.
A. motivation B. inspiration
C. priority D. responsibility
书面表达
假如你是李华，校学生会主席，得知著名英国教授Matrix在你校参加英语教师培训会（2016年3月28日—3月30日），特邀请Matrix在开会期间给你校学生做一个关于英语写作的讲座。
请按下列要点写一封邀请信：
1. 本人简介；
2. 讲座内容；
3. 表示感谢。
注意：1. 词数：100左右。
2. 可以适当增加细节，以使行文连贯。
3. 参考词汇：学生会 the Students’ Union
培训会 training conference
Dear Professor Matrix,
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
Yours sincerely,
Li Hua
