一年中有______个季度,今年的第一季度有______天.
一年中有四个季度,今年的第一季度有:31+28+31=90(天);
故答案为:4,90.
Nobody knows the man killed in the accident, so it is difficult for the police to find out his _____.
A.identity
B.height
C.weight
D.thought
将下列地理区域与所属的区域类型连线。