小红把3x+7错写成3（x+7），结果比原来[ ]
A．多3
B．少3
C．多14
D．少7
答案：C
Leaves are found on all kinds of trees, but they differ greatly ______ size and shape. [ ]
A. on
B. from
C. by
D. in
病毒性心肌炎心肾阳虚证的用方是( )
A．银翘散B．附子汤C．葛根芩连汤D．生脉散合复脉汤E．血府逐瘀汤合生脉散
