3-2x＜5①x-2≤1②，
解不等式①得，x＞-1，
解不等式②得，x≤3，
所以不等式组的解集是-1＜x≤3．
骨显像时，为了便于分析骨转移瘤的分布特点，将全身骨骼划分为如下5个区域，下列哪项不属于胸部（）。
A.肋骨
B.锁骨
C.胸椎
D.胸骨
E.肩胛骨
It is probably easier for teachers than for students to appreciate the reasons why learning English seems to become increasingly difficult once the basic structures and patterns of the language have been understood．
