织通过的国际公约中"体现"了。

　　24．It can be inferred from the passage that ________．

　　A．UNESCO signed the World Heritage Convention in 1972

　　B．World Heritage sites belong to the world and are of great value to humanity

　　C．participation of the local population usually makes the conservation work easy

　　D．UNESCO is an organization aimed at protecting the World Heritage

　　答案　B

　　解析　推理判断题。根据第二段第二句可推知B项正确。A项联合国教科文组织不是签署，而是通过了《世界遗产保护协定》；从文中推断不出C项；D项对联合国教科文组织表述不准确。

　　B

　　Family traditions were important in our house，and none was more appreciated than the perfect Christmas tree.

　　"Dad，can we watch when you trim(修剪)the tree？" My eldest son，Dan，nine，and his seven­year­old brother John，asked.

　　"I won't be cutting this year，" my husband Bob said."Dan，you and John are old enough to measure things.Do it all by yourselves.Think you boys can handle it？"

　　Dan and John seemed to grow__six__inches in their chairs at the thought of such an amazing responsibility."We can handle it，" Dan promised."We won't let you down."

A few days before Christmas，Dan and John rushed in after school.They gathered the tools they'd need and brought them out to the yard，where the tree waited.I was cooking when I heard the happy sounds as the boys carried the tree into the living room.Then I heard the sound that every mother knows is trouble：dead silence.I hurried out to them.The tree was cut too short.John crossed his arms tight across his chest.His eyes filled with angry tears.