如图所示是某同学用刻度尺测乒乓球直径的示意图，正确的是[ ]
A.
B.
C.
D.
答案：D
They _ _the grass water twice a week.[ ]
A. sprinkle; on
B. sprinkle; with
C. sprinkling; with
D. sprinkling; on
区域变质作用（regional metamorphism）
