下列()海区不是《防止船舶垃圾污染规则》规定的特殊区域。
A、黑海
B、波罗的海
C、日本海
参考答案:C
——It’s _____ to rain.
——Let’s get the work _____ before the rain comes.
A.likely; to be finished
B.probable; to be done
C.possible; to be finished
D.likely; done
圆周率是圆的周长和直径的比的比值.______.