小军用小棒摆了10个六边形．如果用这些小棒摆正方形，可以摆几个？
6×10÷4
=60÷4，
=15（个）．
答：可以摆15个．
我国要加快发展的可再生能源包括（）。
A.石油
B.天然气
C.风能
D.太阳能
E.生物质能
The little boy made a mistake, so his mother ____ him to leave the house as a punishment. [ ]
A. forbade
B. hoped
C. prevented
D. persuaded
