题目

 There was a (an) _______ silence in the live interview, when no one knew what to say to the audience.    A. thorough        B. adequate        C. desperate        D. awkward 答案：D在果实成熟期，根吸收的水分主要用于（　　）A．果实的生长发育B．植株的生长发育C．植株的光合作用D．植株的蒸腾作用