Question

When we sleep is      cultural as biological-and practices differ greatly round the globe.

A．that much

B．so much

C．too much

D．as much

Answer 1

D

考查同级比较：as +adj+as结构，as much as和…一样多，句意：我们什么时候睡觉在文化上和生理上一样多，做法全世界都不同。选D。