It had also given me a choice, either to leave that page blank or to keep writing the story with hope.
2018年高考英語江蘇卷 完形填空 原文
In it, a mother is asked to interact with her child in a normal way before putting on a blank expression and not giving them any visual social feedback.
2017年考研真題（英語二）閱讀理解 Section Ⅱ
Infants are wired to look at parents' faces to try to understand their world, and if those faces are blank and unresponsive-as they often are when absorbed in a device——it can be extremely disconcerting for the children.