题型:选择题 In order to help her children with their lessons, the woman _______ to some magazines and newspapers last week, though she doesn’t make much money. A.subscribedB.adoptedC.draftedD.adapted 查看答案
题型:单项选择题 A1型题 有机磷农药中毒的发病机制是A.乙酰胆碱活性降低,胆碱酯酶积聚B.胆碱酯酶不能被磷酸化C.胆碱酯酶活性增高,乙酰胆碱减少D.胆碱酯酶降低,乙酰胆碱积聚E.乙酰胆碱被水解为胆碱及乙酸 查看答案