3．请根据所听到的内容和表格中的提示词语，填所关键信息．
| Where are the visitors going？ | They are going to a British city（56）略 |
| What's the weather like in the afternoon？ | It is （57）略 |
| When were those beautiful houses built around the lake？ | They were built （58）略 years ago． |
| What is the speech mainly about？ | （59）略． |
16．
0 120991 120999 121005 121009 121015 121017 121021 121027 121029 121035 121041 121045 121047 121051 121057 121059 121065 121069 121071 121075 121077 121081 121083 121085 121086 121087 121089 121090 121091 121093 121095 121099 121101 121105 121107 121111 121117 121119 121125 121129 121131 121135 121141 121147 121149 121155 121159 121161 121167 121171 121177 121185 159627
| Importance | Air is very important to （26）略 ．People all over the world are looking for （27）略 to make it clean again． If we are going to keep （28）略 ，we need to breathe clean air． |
| Reason for air pollution | （29）略 smoke looks pretty in the air．But it is not good to breathe． More and more factories and more and more （30）略 -trucks and planes． |