企源知识库

For more than a century, a few scientists have occasionally daydreamed of ________ much of the Sahara desert green.
A、transmitting
B、transporting
C、transplanting
D、transforming
【正确答案】：D
【题目解析】：transform：使改变形态，使改变外观(或性质)，使改观。符合句意。