题目

Rainforests      and burned at such a speed that they will disappear from the earth in the near future.   A. cut      B. are cut     C. are being cut    D. had been cut 答案：C 读我国某种农作物三大优势产区分布图，回答22-23题。 22. 该农作物最可能是  A.玉米   B.小麦  C.大豆   D.棉花  23. 与其他两地区相比，该农作物在优势区I质量好的最主要原因是  A. 土质疏松  B. 水源丰富  C. 晴天多，光照强  D. 气温年较差大