شرکت در آزمون آنلاین زبان انگلیسی 1 - زبان انگلیسی 1 | آزمون شماره 13647

It is the source of amino acids that human cells need to repair themselves.

What the human body uses to protect itself against illnesses is made of protein.

The source of all the amino acids that the human body needs to function properly is the protein we consume.

In order to repair themselves, our cells require a number of amino acids some of which are provided through the intake of dietary protein.

there are still many places without electricity                                                                                                              

people have always been after finding better ways to preserve food                                                                            

drying is the best way of food preservation

drying, as the oldest way of food preservation, works in all climates