根据《建立世界贸易组织协定》,世界贸易组织于()年1月1日起正式诞生。
A.1994
B.1995
C.1996
D.1997
参考答案:B
下列病变中,哪种罕有出血()
A.转移瘤
B.胶质瘤
C.听神经瘤
D.垂体瘤
E.脑血管畸形
.When he goes out, he often wears sunglasses _______nobody can recognize him.
A.so that
B.now that
C.in case
D.as though