为了配制NH4+的浓度与C1-的浓度比为1∶1的溶液，可在NH4Cl的溶液中加入

In China，a lot of food is wasted every year and the waste food is enough for       people．The food is wasted in restaurants，at home and in schools，etc．
In restaurants or at home，people often order or cook        food．But they can’t eat it up．When they go out of a restaurant，full and happy，they never look back           the uneaten food on the table again．Should Chinese consumers（消费者）feel         for the terrible waste?
In schools．we can often see a lot of students         food away after meals and they only eat the food they like．
Everyone is supposed to have enough food to eat．However, in some places, the food is so little          a lot of people died from hunger．Although China has tried hard to solve          of hunger over the past thirty years，the job is not finished yet．Food is important to us all．We         live without food．So        is necessary for us to love food and try to eat up everything on our plates．When we eat in restaurants，we should pack up the leftovers（剩菜剩饭）．we also need to tell other people to stop        food as soon as possible．

小题1:	A．200 million B．200 millions C．200 million of D．200 millions of

小题2:	A．too many B．many too C．too much D．much too

小题3:	A．in B．at C．on D．up

小题4:	A．interested B．excited C．happy D．sorry

小题5:	A．throw B．threw C．thrown D．to throw

小题6:	A．which B．when C．where D．that

小题7:	A．the problem B．the question C．the danger D．the mistake

小题8:	A．can B．can’t C．mustn’t D．may

小题9:	A．it B．he C．she D．they

小题10:

A．waste B．to waste C．wasting D．to be wasted