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由于中文和英文不一样没有复数，(e.g: cat and cats), 只能通过量词来表达一件物品是以单个还是复数出现。然而很多时候量词是没有一定的规律的，但是我们还是可以大致总结一下通常情况下如何决定用什么量词。首先我们可以将名词分为生物和静物。一般来说大型的陆地动物用‘一头’或者‘一只’，比如大象，牛和狮子等；而中小型的就用‘一只’，比如猫，狗，鸟类等，而鱼类用‘条’。然而在描述植物时，通常花朵类用‘一朵’...

Firstly, add two solutions of soluble compounds. Eg when making MgCl 2 , add Magnesium Nitrate and Sodium Chloride, as these two solutions are soluble. Then, mix the two solutions together in a beaker, filte...

Priestley presents social responsibility as something imperative to human society; after interrogating the Birlings, the Inspector finishes by informing them of the importance of social responsibility, sayin...

Note that in September I am due to start as a trainee maths teacher . For my interview, I taught a lesson on inequalities to a class of GCSE pupils. In particular, we focused on converting worded problems to...

(x 2 + 6x + 9) - 49 = 0 (x + 3)2 - 49 = 0 then to solve (x + 3) 2 = 49 x + 3 = +-7 x = -10 or x = 4