单项选择题When I saw her walking along the street deep at night, I was really alarmed by her complexion. She looked so ______ just like a ghost.（ ）。 A.gentle B.general C.simple D.hideous
单项选择题流经冷海区的海流称为________。 A. 中性流 B. 冷流 C. 暖流 D. 补偿流
