下图中的5个透镜中,是凸透镜的有__________,是凹透镜的有____________。
ACD;BE
鼓胀的病变脏器主要在于()。
A.肝、肾
B.脾、肾
C.肝、脾
D.肺、脾、肾
E.肝、脾、肾
— What are the students ________ about?
— Whether Senior 3 students should join in the coming school sports meet.[ ]
A. quarrelling
B. inspiring
C. fighting
D. arguing