计算下列各题．（能简算的要简算）215×21×51447×613+37×613（

A large sum of money has been raised            the poorly-educated children in the mountainous areas.

A．in return for

B．for the benefit of

C．as for

D．in memory of

She was walking down the road _______ she heard someone shouting for help.

A．when

B．suddenly

C．until

D．before

大怒、暴怒可以导致的是（）

A.气结

B.气下

C.气上

D.气滞

E.气散

1Sv=100mSv=10000μSv。