书面表达。

     北京正日益成为一个国际化大都市，作为北京市民，请同学们根据以下内容，以“Keep Our City Clean"为题；向包括外国侨民在内的全体北京居民写一份保护环境的倡议书吧。

     Things you ever saw: cars producing smog on the street,people throwing things everywhere,leaving water taps on after using them, Things you will do:not to throw rubbish,turn off the water tap after using it,go to school by bike/bus instead of by car,not to use plastic bags,

     要求：

             1. 语句通顺、语法正确；2. 70词左右。

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山东省产量和出口量居全国第一位的海产品是[     ]

A．鱼、虾、贝

B．对虾、藻类、海螺

C．对虾、扇贝、鲍鱼

D．海带、紫菜、扇贝