艾滋病病毒属于RNA病毒，具有逆转录酶.如果它决定某种性状的一段RNA中A=19%、C=26%、G=32%,则通过逆转录过程形成的DNA中含有[ ]

A．19%

B．21%

C．23%

D．42%

He________a dollar bill in the suit he was sending to the cleaner’s.[ ]

A．came to  

B．came out

C．came across  

D．came up