在于物联网络终端相关的多种技术中，核心是要解决（）的问题。
A.智能化
B.小型化
C.低功耗
D.低成本
参考答案：A, B, C, D
It is the film _______ director is Steven Spielberg _______ attracts quite a few viewers throughout the world.
A．that; who
B．which; that
C．whose; that
D．whose; who
货币从产生时起就具有的两种基本职能是（）①价值尺度②流通手段③贮藏手段④世界货币
A.①③
B.①②
C.②④
D.②③
