第129页 - 创新优化学案八年级英语江苏版

balanced

noisier

sadly

returning

slowly

north-east

includes

store

penguins

tons

D

A

C

B

A

B

 will take action to reduce the number of the tourists/visitors

 plays an important role in slowing down

 meaningful to stop/prevent/keep people from throwing rubbish

 More and more scientists are paying attention to