【单选题】听力原文:Olive oil is a staple in the diet of Mediterranean countries. It is not only used in cooking, but also used liberally mixed with vinegar as a dressing, and even with cracked black pepper as a dip...
A.
Olive oil is an element in the diet of Mediterranean countries.
B.
One can use olive oil to dress himself up with vinegar.
C.
The traditional Greek diet contains high fat content.
D.
Greeks living on the island of Crete had a low occurrence of heart disease.