Farmers do a lot of hard work to keep grain(谷物). They keep it in special places. The places must be very large. Farmers must not keep the places too warm. And they must keep the grain dry, too.

If the grain gets wet or warm, bugs(虫子) come. And fungi(真菌) start to grow. Then people will not eat the grain. They must move it out of the places and throw it away. Farmers all around the world throw away about 630 million tons of grain every year.

Now a special robot can help. It moves through the grain. It tests how warm and wet it is. It sends information to a farmer’s phone. Farmers now can look after grain better. 

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1.It is _________ for farmers to keep grain.

A not easy

B not hard

C not good

D not interesting

解析：选A。A细节理解题。根据第一段“Farmers do a lot of hard work to keep grain(谷物).”可知农民需要做很多艰苦的工作来储存谷物，即储存谷物对农民来说不容易。故选A。

2.The places for keeping grain should be _________.

A wet and cool

B wet and warm

C dry and cool

D dry and warm

解析：选C。C细节理解题。根据第一段“Farmers must not keep the places too warm. And they must keep the grain dry, too.”可知保存谷物的地方不能太热且要保持干燥，故选C。

3.What does the underlined(划线的) part “throw it way” mean?

A 丢掉.

B 回收.

C 储存.

D 食用.

解析：选A。A词义猜测题。根据第二段该句子前文可知，人们不会吃那些有虫子和真菌的谷物，人们会把它们挪出储藏地，然后“丢掉”。故选A。

4.What can the robot do?

A Look after farmers.

B Move the grain.

C Test the wet.

D Use phones.

解析：选C。C细节理解题。根据第三段可知，这款特殊的机器人能在谷物中穿梭，能测试谷物的湿度和温度，能向农民的手机发送信息。故选C。

5.The text is mainly about _________.

A farmer’s work

B grain problems

C food problems

D grain keeping

解析：选D。D主旨大意题。根据全文可知，文章主要讲述了农民在储存谷物过程中出现的问题及相应的解决方法，可知选D。