四级考试是许多童鞋必须通过的考试，其重要程度不言而喻。希望通过四级听力天天练，童鞋们可以提高听力水平，高分通过四级，冲刺六级。

全文听写，童鞋们注意数字听写规则哦~~


Hints:
Freetown
Sierra Leone
Colombia
Bogota
floods—there are
These are areas of poverty, slums, which generally lack basic services like clean water, or even permanent housing. So it is needed to increase investments in education, health care and other areas. The report talks about some successful efforts by local governments and community groups. For example, it says Freetown, Sierra Leone, has established farming within the city limits to meet much of its growing food demands. In Colombia, engineers have created a bus system in Bogota that the report says has helped reduce air pollution and improve quality of life. And governments also need to consider why people are moving out of rural areas. Climate change, drought, floods—there are the reasons forcing people to leave.