下列关于甲、乙两地的叙述,正确的是
A.甲、乙两地都位于西半球
B.甲、乙两地在同一条经线上
C.甲地的经纬度是30°W、30°N
D.乙地位于甲地的东北方
答案:D
Some parents are just too protective. They want to _____ their kids from every kind of danger, real or imagined. [ ]
A. spot
B. dismiss
C. shelter
D. distinguish
鱼类腐败可用K值来表示,K≤20%表明鱼体新鲜,K值大于多少表示鱼体开始腐败()
A.30%
B.40%
C.50%
D.60%
E.70%