处于青春期的少年需要特别的关怀。有研究表明,许多处于青春期的少年往往会做出无所畏惧的大胆举动,是由于大脑产生一种恐惧记忆抑制效应,使孩子们对恐惧感“暂时性失忆”。这种大脑效应,会随着年龄增长及大脑进一步发育逐渐消失。这表明
You won’t discover the truth ______ you look into the matter yourself.
Only by learning more about different cultures _______ avoid misunderstanding during international cooperation.
The fans never expected their favourite team, which owns so many excellent players, ________have been defeated in the first round!
_______ is well known is ________ the Diaoyu Islands have been part of China since ancient times.
At first I set out for the celebration with my friends together, but got _______ from them when we joined the big crowd.