异常物体沿血流运行阻塞相应血管的过程叫
A．梗塞B．梗死C．栓塞D．栓子E．血栓形成
参考答案：C
诊断口干燥症常用的检查有（）
A.唾液流率
B.唾液免疫球蛋白升高
C.腮腺造影
D.核素造影
E.唇腺活检
The farmers were so sad ______ they lost their farms. [ ]
A. that
B. because of
C. but
D. because
