10.　 P_________(产量) of computers has increased double in the last few weeks.

9.　　 Bringing the farmland under ________(灌溉) is the best way to increase the output of the grains.

8.　　 -- What is your native p________(产品) in your home town?

-- Lichee, I think.

7.　　 The ________(发现) of oil on their land made the people rapidly rich.

6.　　 You can plant some flowers and vegetables in the g ________.

5.　　 If you can’t solve the problem in this way, why don’t you try to work it out with another m ________?

4.　　 He w________ out the books he didn't want so that he could put some new ones on the shelf.

3.　　 Can planting ________(烟) make you rich?

2.　　 Our country ________(进口) coffee from Brazil.

1.　　 Ants, mosquitoes, flies are all i ________.