Read and judge. (读一读，判断对错)

           (1)                        (2)                        (3)

            (4)                                                    (5)

( )(1) This is an apple.    

( )(2) This is a pear.      

( )(3) This is a watermelon.

( )(4) This is a pear.      

( )(5) This is an orange.    

规律性的P-QRS-T波被宽大整齐的大正弦波替代，频率200～250次/分，应首先考虑的是（）

A.心房颤动

B.心房扑动

C.心室扑动

D.心室颤动

E.心跳骤停