I got on the bus and found a seat near the back, and then I noticed a man ____ (sit) at the front.
在电风扇、动圈式扬声器、动圈式话筒和发电机中,利用电磁感应原理工作的有____ ;利用磁场对通电导体有力的作用原理工作的有____
The doctor recommended that I________here for sunshine to help me to get over my illness.
猜一猜,用拼音写出谜底。
wān wān yí zuò qiáo,jià zài bàn tiān yāo ,qī sè pái de qiǎo ,yí huì bú jiàn liǎo.
zhè shì ____。