People eat rice all over the world

Rice 【小题1】 (believe) to have been first grown in China or possibly somewhere else in eastern Asia around 10,000 years ago. 【小题2】 earliest evidence of rice farming comes from a 7,000-year-old site near the lower Yangtze River village of Hemudu in Zhejiang province in China.

Rice is a kind of food which requires much labor. In developed countries, the planting and harvesting is done 【小题3】(most) with machines. 【小题4】, in much of the world, these things are still largely done by hand. It takes one farmer 1,000 to 2,000 working hours【小题5】(raise)a rice crop on 2.5 acres of land. The fact that rice needs so much labor means 【小题6】(keep) a lot of the population on the land.

Rice is also a crop 【小题7】 need of lots of water. The wet rice grown in most of Asia needs hot weather after a period of rain and conditions provided by the rainy seasons affect many of the places 【小题8】 rice is grown.

Rice straws(稻秆）【小题9】(leave) in the fields add nutrients(营养物) to the soil after rice is harvested(收割). For the next crop, rice farmers can often enjoy a good harvest by adding little 【小题10】 no fertilizer.(肥料)

Over the years I've been teaching kids about a simple but powerful concept—the ant philosophy(哲学),an 【小题1】(amaze)four­part philosophy.

First,ants never quit.If they're heading somewhere and you try to stop them,they'll climb over.they'll climb under,or they'll climb around.They never quit【小题2】(look)for a way to get where they 【小题3】(suppose)to go!Second,ants think about winter and summer.They are always gathering in their winter food in the middle of summer and they are making 【小题4】(prepare)for the long cold winter.So you have to think about storms in summer;think about rocks 【小题5】you enjoy the sand and sun.Third,ants think about summer all winter.During the winter,they remind 【小题6】，“This won't last long and we'll soon be out of here.”On 【小题7】first warm day,the ants are out.If it 【小题8】(turn)cold again,they'll dive back down.But they come out again if it is warm.Last,how much will an ant gather during the summer to prepare for the winter?All than it 【小题9】(possible)can.【小题10】you can learn from the ant philosophy is:Never give up,look ahead,stay positive and do all you can.

When people hear the word “rat” they may think of dirty animals that spread disease. You may also connect the word “rat” with bad expressions. Indeed, rats generally are not beloved animals either in life 【小题1】the English language. But the rat trainers at the nonprofit organization, APOPO, see the animals very 【小题2】 (different). They consider the rats lifesavers. 【小题3】 (base)in Tanzania, APOPO trains giant rats to find landmines(地雷). And the rats with their extraordinary sense of smell are very suitable 【小题4】 the job. APOPO calls their animal team HeroRats.

Worldwide there are 110 million hidden explosives left over from war. These explosives are still “live,” or able to explode. Such landmines kill or wound 5000 people 【小题5】year. Humans 【小题6】 (use) metal-searching devices to do this work for years. But trained rats do it better and also cost less money. When the rats 【小题7】 (work)in the field find a landmine, they scratch on the ground. That’s how we know. We place a little marker there, and then we can safely remove those and get rid of 【小题8】 (they).

The giant pouched rat is large compared to other 【小题9】 (kind)of rats. However, they still do not weigh enough 【小题10】 (cause) a landmine to explode. So these rats can really be heroes. They   show every day that they are worthy of that name.