命题， 校对：高丰书 尚玉娣 时间：2014年1月20日
一．单项选择：(本大题共15小题，每小题1分,共15分)
21.With ________ word “PM 2.5” repeatedly appearing in ________ media reports, the public can’t help wondering what it really means.
A. the; \ B. a; the C. the; the D. \; the
22. ______ label to each of the trees, with detailed introduction of their features, and visitors will know more about them and how to protect them.
A. To attach B. Attach C. Attached D. Having attached
23.Children should be instructed to put things _____ they belong in their early childhood.
A. where B. in which C. to which D. what
24.The child broke his father’s favourite vase; Although knowing he would ____ to be punished, he told his father the truth.
A. mean B. deserve C. devote D. avoid
25.The time and effort he has devoted during the past few years ______ trees in that remote area is now
