请选择DCBA+K;x-k+A9b5[+Z Americans eat ________as they actually need every day.4s*|9G0|7_
A. twice as much protein4s*|9G0|7_
B. twice protein as much4s*|9G0|7_
C. twice protein as much4s*|9G0|7_
D. protein as twice much4s*|9G0|7_