A:①③
B:②③
C:①④
D:②④
Tom spent as little time as he could ____ (play) computer games.
如下图所示是电视机显像管及其偏转线圈的示意图.电流方向如图所示,试判断正对读者而来的电子束将向哪边偏转( )
根据汉语意思补全单词: ho____ ____ e (家、房屋)