数值越大，说明相关程度越高：同理，相关系数的数值越小，说明相关程度越低。
参考答案：对
Whitman has made radical changes in the form of poetry by choosing free verse as his medium of expression. What are the characteristic of Whitman’s free verse
广泛的下肢深静脉血栓形成最严重的并发症为（）
A.下肢溃疡
B.肺栓塞
C.下肢浅静脉曲张
D.伴动脉痉挛、肢体缺血
E.猝死
