254.
M: Now some doctors are strongly encouraging arm exercises.
W: Arm exercises? Is that because arms are too fat or too soft?
M: Actually that's not the main reason. They say that arm exercises can make you physically healthy.
W: But I was told that arm exercises could raise your blood pressure.
M: Yes, but the article I read suggests some ways to make up for that.
W: Really? How?
M: By adding leg exercises, so that the arms don't do all the work.
W: And in return, I'm sure that there's a good chance of losing weight.
M: Sounds right to me.
W: So what exercises do the experts suggest?
M: They mentioned quite a few exercises, but one of the most popular ones is cycling.
W: Good, I must try that.

答案解析：
(1) 正确答案为C。根据They say that arm exercises can make you physically healthy.他们说手臂运动能让你身体健康。可知，专家强烈建议手臂运动的原因是手臂运动可以增进健康，因此C项正确。
(2) 正确答案为B。根据But I was told that arm exercises could raise your blood pressure.可是我听说手臂运动会让血压升高。可知，手臂运动会让血压升高，因此B项正确。
(3) 正确答案为A。根据By adding leg exercises, so that the arms don't do all the work.可以增加腿部运动，这样不用手臂做所有的工作。可知，手臂运动应该和腿部运动搭配进行，因此A项正确。