“纸包不住火”的老话面临新的挑战。中科院上海硅酸盐研究所的科学家们经过6年的努力,采用具有可控构造的羟基磷灰石纳米材料,合成出一种高柔韧性、可耐1000摄氏度以上高温的新型无机材料纸张。这一研究有力佐证了 ①人类对真理的追求是一个永无止境的过程 ②认识只有不断超越历史条件才能成为真理 ③客观事物的复杂性决定了人们认识的反复性 ④认识的发展具有不依赖于事物的客观规律性
—He should have come to join in the thorough cleaning. —He ________, I think. It's not his turn.
She surprised her neighbors ______ one of her favourite home-made dishes.
Many people hope the new government will ______ the unemployment rate.
The fact is that the company is unlikely ______ the situation.
I argued with my parents until they finally ______ and let me drive every day.