对表2解读正确的是（）

表21750—1900年按人口计算的工业化水平（单位：百分率）

   I came to Australia last year and I  ____   (落下) in love with it. I can see the ____  （明亮的）sunshine everywhere. At the beginning of this ____  (学期), I couldn't understand the teacher in class. Her English was quite different from what I'd heard in class at home. I;m____(幸运的) enough because my classmates are really friendly and helpful . It's____  (令人惊讶的) that I got an A last week. My science teacher is ____（也）good. She said that I was____ （勤勉的）. I dedided to work harder and get good ____（成绩）.After class I always play soccer with ____  (他们).  This is a great ____ （机会）for me to study in Australia .

下列地区中，水旱灾害最为频繁的是（　　）

如图，ABCD是边长为3的正方形，DE⊥平面ABCD，AF∥DE，DE=3AF，BE与平面ABCD所成角为60°．

（Ⅰ）求证：AC⊥平面BDE；

（Ⅱ）求二面角F﹣BE﹣D的余弦值．

生物进化的总趋势是，由简单到复杂，由____等到高等、由水生到____生．