有报告指出,在过去50年间,由于过度捕捞,大型食肉型海洋动物(如金枪鱼和鳕鱼)的数量减少了90%。尽管科学家早在10年前就已知道人类的捕捞速度超过了鱼类的自我补充速度,但这一最新的数据无疑是令人震惊的,对人类已构成威胁。这说明了( )
After reading her writing, every teacher came to the _______ that she was a very careful and promising girl..
________they visited the Science Museum,they showed great interest in everything they saw.
It is reported that a woman as well as two children ______ from a big fire yesterday.
We laugh at jokes, but seldom _____ about how they work.
— Mum why do we eat much vegetable — Because it is ________ to our health.