海洋毒素已知有麻痹类毒素、腹泻类毒素、神经类毒素、遗忘类毒素和___毒素
参考答案：鱼肉
简单说明8床层与10床层方式有哪些不同点？
After listening to the teacher’s explanations, John ____ what he had done was wrong.
A．was aware that
B．was being aware that
C．was nervous about
D．had been nervous about
