Ⅰ.单词拼写
1．Global warming has set ________(担心，惊恐)bells ringing.
2．Past development polluted the environment and wasted natural ________(资源)．
3．The government should do more to promote ________(可持续的)agriculture.
4．Getting better health care，education，housing and improved ________(标准)of living for everyone is our government's aim.
