根据句意和汉语提示写出单词,完成句子。
He is one of the __________(先锋 ) of modern science.
Food safety ________________ (影响) our everyday life.
Reading after the tape can improve our________(发音).
The product of this company has reached the international ____________ (标准), so it sells well all over the world.
His parents died when he was very young, but love was never _________ (缺席的) from his childhood.