Question

It is well-known ______ a person, especially the old, eats too much he’ll feel u

It is well-known ______ a person, especially the old, eats too much he’ll feel uncomfortable.
A. that
B. when if
C. if
D. that when

Answer 1

答案D
考查：it做形式主语，真正地主语是后面的that 从句，that 从句中又是一个由when引导的时间状语从句。句意：众所周知。当一个人，尤其是老人，吃太多的时候他会感到不舒服的。故选D。