题目

 He _____ on the ground _____ to me that his hen _____ two eggs a day. A. lied; laying; had laid                         B. lay; lied; has laid C. laid; lay; had lain                            D. lay; lying; had laid 答案：D10．在中国东北地区人们常利用人造烟雾来防御霜冻的原理是（　　）A．减弱①B．增强②C．减弱③D．增强④