[解析]
8.B 9.A 10.A
【原文】M:Linda,your mom said you want to buy a new bike.Have you saved enough money?
W:Well,I planned to,but I've given up the plan.It's not because of the cost.
M:What made you change your mind,Linda?
W:I always loved to have a new bike,just like the one you bought for Mom.But now I enjoy bike sharing even more.
M:What do you think is the best part about bike sharing?
W:In my opinion,bike sharing is an eco﹣friendly method of travel.So,I will choose to join the bike sharing program.
M:Sure is.It can also save you much time.For example,you can go to school by subway first and then ride a shared bike with your classmate Judy.What do you hope to achieve by joining the program?
W:My goal is to make more classmates develop the environmental awareness and protect the environment.We have a duty to care for the earth.
M:You can say that again.