【正文】
aid if the planes fly too high D. it is not necessary for planes to fly so high 24. If we go up about 1,200 kilometers from the earth, we find ___________. A. there is more air B. there is less air C .there is nothing but air D there is no air 25. In space there is _________. A. nothing B. air everywhere C. everything D. only the sun ,the moon and all the stars [探究題 ]勤于思考,勇于挑戰(zhàn),才能突破自我 ! ★ 六. 缺 詞填空 Dear Editor, I am a r_26___ of your magazine and I need help. I am very u___27___ these days b____28__ I have some problems with my new school. I am a G___29___ 8 student. I lived in Jiangsu but I just moved to Shanghai with my p____30__ .Now , I am studying at a new s____31__ school in Shanghai. I do not know the school very well and I have n___32___ friends here. I do not know how to t___33___to my classmates. Sometimes, I am unfortable when they talk to me . During lunchtime, I always sit a___34___ in the playground and read books. I hope they will not e and talk to me. I m___35___ my c