下图为岩石圈物质循环示意图，图中①～④四个箭头表示地质作用。岩石圈是指（     ）

某生产小组有15名工人，调查每个工人的日均零件生产能力，获得如表数据：

（1）求这15名工人日均生产零件的众数、中位数、平均数．

（2）为提高工作效率和工人的工作积极性，生产管理者准备实行“每天定额生产，超产有奖”的措施，如果你是管理者，你将如何确定这个定额？请说明理由．

大型电视系列片《正道沧桑社会主义500年》中针对美国动画电影《功夫熊猫》风靡全球发问，为什么坐拥丰富的文化资源，我们却拍不出这样的电影呢？其实，这折射出的就是文化大国与文化强国之间的巨大差距。这警示我们，要实现从文化大国向文化强国迈进的宏伟目标（   ）

a=3K，b=3K，c=3 $\sqrt{2}$  K．

完形填空。

     Jean is an English girl. She lives in Beijing 1 her parents. She doesn't know Chinese very 2. But she 3 very hard. She often speaks 4 in class and after class. Sometimes her classmates don't understand her 5 she can't speak Chinese well.

    It's Sunday morning. Jean wants to 6 some flowers, but she doesn't know the 7 to the flower shop. She asks a Chinese boy for help. The boy can't 8 her. Then she takes out a pen and a piece of paper and draws a 9 of a shop and some flowers. The boy looks at it and then 10 her the way.