A：①②
B：②③
C：①③
D：①④
观察下面一组算式，再列出综合算式．
4.2÷5=0.84
0.84＋5.6=6.44
10－6.44=3.56
3.56×50=178
综合算式：____
Dolly is a middle school girl. Her parents want to take her to Ice and Snow Festival. How much will they pay for the tickets?
一____叶子 一____小花 一____汗水
一____谷粒 一____大雁 一____秋风
绝大部分膳食纤维不能被人体消化吸收，但能促进肠道的蠕动。
