“历览前贤国与家，成由勤俭败由奢。”勤俭节约是中华民族的传统美德。
根据拼音，写汉字
nóng hòu
jié lì
shū yè
____
pí fū
hé lǒng
下列哪些设备是根据磁场对通电导线的作用原理制成的（）
STUDY ENGLISH IN AMERICA
Country
Tina comes from ____.
Weekend Activity
Tina visits____ on Sundays.
Location
Tina's host family is in a ____ area.
TV Program
Tina always watches ____ in the evening.
Study Time
Stay for ____ and study English as Tina does!
请将黄灯上面的灯圈出来。
如图所示，电磁铁左侧的甲为条形磁铁，右侧的乙为软铁棒，A端是电源的正极．下列判断中正确的是（ ）
