The（ ）creates opportunities for more direct integration of the physical world into computer-based systems，resulting in efficiency improvements，economic benefits，and reduced human exertions.
internet of things
cloud computing
big data
mobile internet
（物联网）创造了将物理世界更直接地整合到基于计算机的系统中的机会，从而提高了效率、经济效益，并减少了人类的劳动。
A. 物联网
B. 云计算
C. 大数据
D. 移动互联网