— Do you know where David is ? I couldn’t find him anywhere.
— Well, he ______ have gone far –-his coat’s still here.
A. shouldn’t B. mustn’t C. can’t D. wouldn’t
—How's everything with you?
— .
A. Fine, thanks B. It's all right
C. Thank you very much D. I'm very well
I finally got the job I dreamed about. Never in all my life____ so happy.
A. did I feel B. I felt C. I had felt D. had I felt
________work has been done to improve people’s living standard.
A. Many B. A great many C. A great deal of D. A large number of
Greenhouse phenomena would cause ______ rise in sea levels worldwide and change ______ weather on the earth.
A. a; the B. the; 不填 C. a; 不填 D. 不填; the
模拟联合国活动每年吸引全球30多个国家的200万高中生和大学生。2010年北京大学全国中学生模拟联合国大会(Peking University National Model United Nations for High School Students 2010) 将于2010年4月19日—22日在北京大学举行。假设你是北京大学学生会主席李华，应你的美国笔友Peter的要求，向他介绍此次大会的情况。请根据下列信息，给他写一封电子邮件。
时间、地点：2010年4月19日—22日，北京大学；
参会人数：200余名学生，来自57所学校，代表97个国家；
主要议题：体育发展、环境保护、妇女的权利等9个议题；
活动意义：开阔视野，提高组织、沟通能力……
注意： 1. 电子邮件的开头已为你写好；
2.词数:100左右。
Dear Peter,
Thank you for your interest in Peking University National Model United Nations for High School Students 2010.
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Yours,
Li Hua
