Ⅰ.单词拼写
1．Obesity among children is increasing at an even more alarming pace，having more than tripled in the past two __________(十年)．
2．Glass is obviously a wiser choice for the planet as it can easily be __________(回收利用)and does not take hundreds of years to break down like plastic.
3．We discussed the pros and cons of changing the company's
__________(操作) system.
4．The police __________(逮捕) five young men in connection with one of the attacks.
5．Large __________(数量)of gases are emitted(排出)which are then changed into acids.
6．They learn how to solve their __________(矛盾) through discussion rather than violence.
7．Electric power is __________(测量) in watts，named after the famous British engineer James Watt.
