题目

 阅读表达阅读下面的短文，并根据短文后的要求答题。（请注意问题后的字数要求）[1]Once, when there was a famine（饥荒）, a rich baker sent for twenty of the poorest children in the town, and said to them, “In this basket there is a loaf（面包）for each of you. Take it, and come back to me every day at this hour for more.[2]The hungry children gathered eagerly about the basket, and fought over the bread because each wanted the largest loaf. At last they went away without even (2)______ the good baker.[3]Gretchen, a poorly dressed little girl, did not （2009?崇安区二模）如图所示，是一种电热器的内部结构图，此电热器的温度可以通过开关S1、S2的变化来调节，若图中R1、R2是两根相同的电阻丝，电源电压保持不变．当电热器的功率最大时，开关S1应闭合闭合（填“闭合”或“断开”），开关S2应接aa填（“a”“b”）．