--- Could I use your computer for a few moments, please?
--- ________. I’m not using it myself.
A. Come on B. It depends C. Go ahead D. That’s great
People have always been curious _________ how living things on the earth began.
A. in B. at C. of D. about
I really don’t think my best friend will be angry, but I’11 go and see her，in
case she _______.
A．will be B．is C．does D.has been
--It was 3 o'clock_______we arrived at the village.
--Oh，it was also at 3 o’clock______we arrived at the village.
A．when；when B．that；when C．that；that D．when；that
Paris is________most beautiful city，where you can see_______famous Eiffel Tower．
A．a；the B．a；不填 C．the；a D．不填；the
在城市中处理垃圾是非常重要的。垃圾必须被扔掉或适当地再利用，否则她可能会引起许多问题。它可能会污染空气和水。当人们呼吸了被污染的空气或饮用了被污染的水时，很可能会生病。
我们的城市已经开始面对这一问题。一些垃圾被分类送到某一个地方。废气在排放是必须经过净化。废水在排放到河里之前也要被净化。
应该阻止人们到处乱扔垃圾。我们应该尽我们最大的努力来保护环境。
词汇： 垃圾rubbish 再利用reuse 倾倒pour into 环境environment
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