The treadmill began to whir, and I gripped its han...
The treadmill began to whir, and I gripped its handlebars as the belt started moving me backwards. All I could do now was run—or begrudgingly barrel forward—toward an outdated screen that showed me the terrain I was supposed to be running on. It was made of red squares stacked up, one on top of another: the higher stacks were supposed to be steep hills, and the lower ones, valleys. I tried to picture them as burning coals to see if that would make me speed up or at least feel like this exercise was somehow connected to nature—even one of its cruel parts. How would you describe this author's attitude towards the treadmill?
A、negative
B、positive
C、neutral
D、angry