可持续发展已成为全球共识，如何实行可持续发展是摆在世人面前的重大问题。请就下面表格所提供的内容进行陈述并谈谈你的看法。

注意：

不要逐条翻译，可适当发挥；

词数：150左右；

文章的开头部分已给出。

参考词汇：差距 gap； 相关法律 relevant laws

The idea of sustainable development has been accepted by the world. How to keep sustainable development is a big problem facing our planet.                                        

——Have you finished the book?

   ——No. I’ve read up to          the children discover the secret cave.

 A. which        B. what         C. that          D. where

-----Is this the first time you _____Chengdu ?

-----No. But the first time I _____here, the city wasn't so beautiful.

A. visited, came          B. visited, have come   C. have visited, have come      D. have visited, came

—Hi, I hear you’re going to London this summer vacation.

  —             , I was going to, but now I have changed my plan.

A. Previously         B. Recently            C. Absolutely         D. Partly

As is known to all language learners, the newly learnt words will soon be forgotten unless______ used in everyday communication.

A. gradually                 B. sincerely           C. hopefully          D. frequently

President Hu Jintao demanded every effort ________ to rescue and treat the injured when the earthquake happened in Yushu．

       A．is made           B．must be made

       C．be made          D．should make

As a rule, this hotel offers___18 percent discount for____guests staying on Friday and Saturday.

A. a; the            B. the; the                  C. the;不填              D. an;不填

The old lady  lives in a house ______ windows are broken.

A. which  B. whose  C. what   D. that

As the story develops, the young woman has now got a ______ job in a library after several part-time jobs．

       A．precious          B．special

      C．specific          D．stable

You must read the _______ with great care to see if the drug contains PPA before it is taken.

A. instructions   B. introductions      C. explanations     D. Expressions