纵向弛豫是指（）。
A.T2弛豫
B.自旋-自旋弛豫
C.自旋-晶格弛豫
D.氢质子顺磁场方向排列
E.氢质子逆磁场方向排列
参考答案：C
列出5种伴肉芽肿形成的传染病和寄生虫病名称。
Fifty years ago, wealthy people liked hunting wild animals for fun ________ sightseeing.
A．rather than to go
B．more than going
C．other than going
D．than to go
