新生儿不宜皮下注射的原因有（）
A.皮下脂肪少
B.注射容量有限
C.分布快
D.易损害邻近组织
E.吸收不良
参考答案：A, B, D, E
With the development of science, more new technology ________ to the fields of IT. [ ]
A. has introduced
B. is being introduced
C. is introduced
D. was introduced
请述湿温之病机特点。
