旅游者是属于旅游消费的消费者。( )
参考答案：对
Tom didn’t go hiking with his classmates ____ his illness.
A. because B. because of C. as
在门静脉与腔静脉的交通支中，最主要的是（）.
A.胃底、食管下段交通支
B.直肠下段、肛管交通支
C.前腹壁交通支
D.腹膜后交通支
E.肝被膜交通支
