【提出问题】小森同学在滴加FeCl3溶液时，不小心把滴加FeCl3溶液的滴管放入到盛“双
氧水”（过氧化氢）的试剂瓶中，发现有大量的气泡产生。小森联想到用二氧化锰可作为过氧化氢的催化剂，他想FeCl3溶液能否也可以作为过氧化氢分解的催化剂呢？于是他做了以下探究。
【猜想与假设】FeCl3溶液能作过氧化氢分解的催化剂
— How do you like the regulations of our school?
— The regulations are strict with the students and they require that students _______ at least 90% of the lectures.
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Yesterday Peter felt very sorry because he forgot (忘记) to say “Happy Birthday” to his uncle . So he wrote a letter to his uncle : “My dear uncle, I'm very sorry because I forgot your birthday. But to teach me a lesson, you'd better (最好) forget my birthday on Tuesday, tomorrow.”
17世纪中期开始，人类历史上三次早期资产阶级革命先后在英国、美国和法国爆发。这三次革命的共同影响是（ ）
