Of all the books on the desk, ________ is of any use for our safety．
A．nothing B．no one C．neither D．none
While he was investigating ways to improve the telescope, Newton made ________ discovery which completely changed ________ man’s understanding of color．
A．a; 不填 B．a; the C．不填; the D．the; a
It is reported that the police will soon ________ the case of the two missing children．
A．look upon B．look after C．look into D．look out
Don’t be discouraged．________ things as they are and you’ll enjoy every day of your life．
A．Taking B．To take C．Take D．Taken
—Waiter, ________?
—Wait a minute, sir．That’s $ 80 altogether．
A．would you charge me B．how much did we eat
C．may I have the bill, please? D．would you take the money
假设你是李华，作为2010年上海世博会一名中学生志愿者，你感觉身边还存在许多不文明行为。请你向全国中学生写一封120词左右的倡议书，倡议书内容必须包括以下要点：
（1）召开世博会的意义；
（2）列举身边一些不文明的行为；
（3）你的建议。
参考词汇：2010年上海世博会 Expo 2010 Shanghai China
Dear fellow students,
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Li Hua
