【简答题】Farmers can save a considerable amount of pesticide by ________. A) resorting to spot-spraying B) consulting infrared scanning experts C) transforming poisoned rain D) detecting crop problems at an ea...
【简答题】A.genetic B.technology C.scientific D.pesticide
【判断题】自然选择是有方向的,其方向就是使得生物适应环境:
【简答题】The pesticide manufacturers have organized an international federation called ______.
【简答题】农药残留 (pesticide residue)(名词解释)