Skip to content
Prep
Freely
Home
TOEFL
IELTS
Guides
Log in
Sign up
P
Account
Profile
My progress
Settings
Log out
TOEFL
/
Listening practice
/ Section 7YSB
Listen to an Academic Talk
Listen to part of a talk in a hydrology class.
Listen
28. What can be inferred about a level calculated from a fifty-year record?
A
It is more accurate than one from a shorter record
B
It should be recalculated every fifty years
C
It applies only to rural catchments
D
It carries an uncertainty that is usually left unstated