What can you infer from the passage? 查看材料
A.
The experiments show that salt ingestion does not necessarily cause animals to develop hypertension bypretension with the environmental factors being equal.
B.
Dietary salt is harmful to human being's health.
C.
Human beings' high blood pressure will never be easily put under control.
D.
In order not to develop hypertension, man should consume chemically pure salt.