问题
选择题
Though ______ of danger, sightseers have been flocking to the site where the world’s biggest terrorist Bin Laden lived.
A．warned
B．warning
C．being warned
D．having warned
答案
:A
考查非谓语动词。句意：虽然被警告有危险，但观光者直涌向世界上最大的恐怖分子本·拉登居住的地方。前半句是“Though they are warned of danger”的省略形式sightseers与warn之间是被动关系。