第二心音固定分裂最常见于何种疾病

A．室间隔缺损

B．动脉导管未闭

C．房间隔缺损

D．右束支阻滞

E．左束支阻滞

Concerning the E.U.，which of the following statements is wrong？（）

A.A college student in Greece can get a job in the U.K.in summer vocation.

B.All the member countries adopt the currency，euro.

C.The executive body of the E.U. is the European Commission，headquartered in Brussels.

D.The Council of Ministers has the final power to decide E.U.actions.