Bladder wrack, a tough, leathery brown seaweed, clings to rocks tenaciously.

单项选择题My wife wants me to do away with my shoes.

单项选择题His marked personality changes were brought about by a series of unfortunate events.

单项选择题Penicillin was discovered by chance in 1928.

单项选择题The Pop Art of the 1960’s used imagery drawn from the everyday world.

单项选择题By the time the war broke out, most of the people had already left.