It took years for Einstein"s theory to gain acceptably.

An idle youth, a needy age.

Man was, is and always will be trying to improve his living conditions.

There is nothing so admirable as a man whose sacrifices his life and happiness for others. 

In this passage, the expression "walk in the shoes of" is similar in meaning to （）.

The Crimea also released CDs for sale in shops because （）.

The doctor will get more practice out of me than out of ten ordinary patients.

The only way to conquer a fear is to face it, and doing so as frequently as possible.

It is when you nearly lose someone when you become fully conscious of how much you value them.