题目

下列关于小麦和松树共同特征的叙述，错误的是（   ） A．都能产生种子                                        B．根、茎、叶都很发达 C．生殖过程不需要水                                 D．种子外面都有果皮包被 答案：D--- I can’t stop playing computer games.---For your health and study, I am afraid you _______.A. can B. may C. need D. have to