蛋白质缺乏将阻碍细胞和组织的正常发育，造成（），免疫功能下降。
A.生长发育加速
B.生长发育正常
C.生长发育迟缓
D.生长发育停止
参考答案：C
—Tom, your foreign teacher speaks Chinese fluently!
—Oh, she has lived in China for six years, otherwise she _______ such good Chinese.
A．didn’t speak
B．would not have spoken
C．would not speak
D．hadn’t spoken
1分子甘油彻底氧化后可产生ATP分子（）
A.17～19个
B.18～20个
C.19～21个
D.20～22个
E.21～23个
