世界上面积最大的大陆是[ ]
A、亚欧大陆
B、美洲大陆
C、非洲大陆
D、南极洲大陆
答案：A
A neighbour helped to keep our dog. It _____ while we were on holidays. [ ]
A. was taken care
B. took care of
C. was taken care of
下列几组物质中，既是人体的组成物质，又是人体的供能物质的是
A．脂肪、糖类、维生素
B．蛋白质、脂肪、无机盐
C．糖类、脂肪、蛋白质
D．蛋白质、水、无机盐
