7. Monitoring heart patients’ exercise, as well as athletes exercising, is now done by small transmitters broadcasting physiological measurements to nearby recording machines.
(A) Monitoring heart patients’ exercise, as well as athletes exercising, is now done by small transmitters broadcasting physiological measurements to nearby recording machines.
(B) Monitoring the exercise of heart patients, as well as athletes exercising, is now done by small transmitters broadcasting physiological measurements to nearby recording machines.
(C) Small transmitters broadcasting physiological measurements to nearby recording machines are now used to monitor the exercise of both heart patients and athletes.
(D) Broadcasting physiological measurements to nearby recording machines, small transmitters are now used to monitor heart patients’ exercise, as well as athletes exercising.（C）
(E) Both athletes exercising and heart patients’ exercise are now monitored by small transmitters broadcasting physiological measurements to nearby recording machines.
答案选c。
我想问的是，红色部分，exercise不要加s变为复数的吗？就是看它不是复数，选择的时候就直接cancel了c选项。 | 
