当前，社会环境中的消极因素会给未成年人的身心健康和合法权益造成严重损害，因此，未成年人要增强自我保护的意识和能力，具体应做到[     ]

①自觉依法律已，抵制不良行为的侵害

②增强防范意识

③要自觉接受家庭、学校、社会的保护

④当合法权益受到非法侵犯时，要依法维护

A．①②④

B．①③④

C．①②③④

D．②③④

Which of the following statements is true of the Parkinson’s disease

A．Parkinson’s always shows the same symptoms on different people.

B．People inflicted with Parkinson’s often have a shaking hand or a stiff hand.

C．The symptoms of Parkinson’s vary among different patients.

D．Victims of Parkinson’s find it difficult to recall what they have eaten for dinner.