用一句话概括下面这则新闻的主要内容，不超过20个字。

    杭州的建筑工地每年有1 000多个，如果把这些工地的围墙适当“美容”一下，它将成为街头一道独特的风景。为进一步打造“国内最清洁城市”，今后，杭州新开工的建筑工地的围墙都要美化。

现在不少城市的墙绘主要是广告，而杭州的墙绘则比较有江南特色，有些还融入了地域文化。有关部门要求杭州建筑工地的墙绘今后消除盈利性广告，逐步走向公益化，赋予其丰富的文化内涵，体现出杭州的文化特质。

根据情境及首字母提示填入适当的单词，使短文句意完整、通顺。
Pen pal wanted
   His name is Wang Lei. He is a____ C_____ boy. He wants a pen pal in____ F_______ . He thinks it’s a very____ i______  country and he wants to learn some French. He____ l_____  in Beijing, China with his parents now. He is 14 ____  y______  old and his____ b______  is in November. He can speak Chinese and a little English. What are his ____  l______ ? He likes watching sports games on TV and ____  p_____ computer games with his friends. His favorite subject is computer science. It’s____  f______ . He doesn’t like math, because it’s too difficult.
   Please write to____ h____ and be his pen pal.

地面某一个地点高出海平面的垂直距离叫做____．

①值得一提的是，这一活化石已成为我们湛江人餐桌上的美味佳肴

②海豆芽是一种生活在温带和热带海域的无脊椎动物

③又因为它的贝体呈长椭圆形，很像人的舌头，也有人叫它“舌形贝”

④资料显示，它是现今最古老的活化石，至今有几亿年的历史

⑤因为它上部的贝体像一颗黄豆，下部的肉茎宛若一根刚长出来的豆芽，所以俗称“海豆芽”