This is a rich country. There are lots of poor people. (compound sentence)

【正确答案】 This is a rich country, but there are lots of poor people.

【答案解析】 本题要求把句子改写成并列句。题目中的两个句子是转折关系，因此可以用but直接将两句话连接起来，构成并列句，两个句子仍保持原来的顺序。