看近物时,使晶状体变厚的主要原因是
A.睫状小带紧张B.睫状肌紧张C.瞳孔括约肌舒张D.睫状环扩大E.瞳孔括约肌收缩
参考答案:B
The bus crashed into a truck in front of it, ______ 40 deaths and more wounded.
A.cause
B.causing
C.caused
D.to cause
SLE常见临床表现有哪些?