②打 C点时物体的速度大小为_________ m/s（取2位有效数字）
I was ten when I first sat with my grandmother behind the cashier（收银台）in her general store. 71 I quickly learned the importance of treating customers politely and saying “thnak you.”
结合全文来看，开头三段在文章中有哪些作用？（6分）
（2）结合上面选段，谈谈你对“乐取于人以为善”这句话的看法。(3分)
一位旅行者携带德国马克前往拍林。根据欧元启动进程的有关规定，该旅行者持德国马克最迟到柏林渭费的时间应该在 ( )。
C Too much TV-watching can harm children’s ability to learn and even reduce their chances of getting a college degree,new studies suggest in the latest effort to examine the effects of television on children.
下列对文章有关内容的表述，不符合原文意思的一顶是(3分)
据材料二、三，甘地为什么要“诅咒西方文明”(3分)
What is happening when we give gifts Most important, we are exchanging gifts. If someone gives me a gift for my birthday, I know that I am usually expected to give one on his or her next birthday. A gift builds up or confirms a social oblingation（义务）.
（5）为确认Q的存在，需在装置中添加M于 （选填序号）。
③在适宜条件下喂养一段时间后，发现手术损毁鼠的性腺萎缩，这是由于该大鼠下丘脑释放的__________减少，使垂体释放的__________降低所致
A. ran B. walked C. drove D. cycled
The author uses power walking as an example mainly because _________.
随着城市发展，城市郊区的农业结构将发生变化。下列土地利用类型在该地农业用地中的比重最可能降低的是
10.亚洲有一种毛竹，最初5年里在地下生根长达几千米，人们几乎看不到它的生长。第6年雨季到来时，它钻出地面，以每天60厘米的速度迅速长到30米高。这种现象反映了