各类营养物质在人体消化道内开始被消化的顺序是：
①蛋白质②淀粉③脂类④无机盐⑤纤维素 [ ]
A．①②③
B．①③⑤
C．③②①
D．②①③
答案：C
They ________ have a tennis racket. [ ]
A. aren't
B. doesn't
C. isn't
D. don't
什么是 * * 党人的政治灵魂？
