世界遗产是如何分类的？
参考答案：
文化遗产、文化和自然双重遗产、文化景观、自然遗产、其他遗产。
估算898-204≈
—There aren’t any toys in our suitcase．Where have you put them?
—Oh, no．That old lady sitting next to us ______ have taken ours by mistake.
A．must
B．could
C．should
D．would
