下列单糖在小肠中吸收速率最高的是（）
A.葡萄糖
B.甘露糖
C.阿拉伯糖
D.果糖
E.半乳糖
参考答案：A
选择与句中划线部分意思相同或相近的词或短语。
The old man had to stop his work because of his poor health. [ ]
A. give up
B. put up
C. look up
D. turn up
