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 HLE6
Listen to an Academic Talk
Listen to part of a talk in a chemistry class.
Listen
28. What does the speaker say is the modern solution to the loss of vitamins?
A
Adding vitamins back after the food has been sealed
B
Heating for a shorter period at a higher temperature
C
Using a lower temperature over a longer period
D
Sealing the tins without heating them at all