单项选择题
A．changed B．examined C．covered D．cleaned
A．Giving up hope means giving up happiness. B．Letting go of hope is at times a better choice. C．Hope is what makes people move on. D．Hope frequently gets in the way of happiness.
A. if there isn't enough dopamine in your body B. what affects muscles all through your body C. which cannot be cured yet D. if you have a fixed or blank expression E. which may be the first symptom you notice F. what causes Parkinson's disease