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  • A bottle weighs more after air is put in ,________proves that air has weight.A we B it C which D

    A bottle weighs more after air is put in ,________proves that air has weight.A we B it C which D
    that 求詳解,感激不盡.
    英語(yǔ)人氣:800 ℃時(shí)間:2019-11-13 21:13:24
    優(yōu)質(zhì)解答
    A bottle weighs more after air is put in ,__B_____proves that air has weight
    一個(gè)瓶在裝入空氣后更重了證明空氣有重量的.
    選B it作形式主語(yǔ)代指前半句話. 前半句是句完整的句子,不能用that which 因?yàn)榫渥硬蝗背煞謺r(shí)不能用代詞that/which 排除CD A選項(xiàng)we 和前半句的主語(yǔ)a bottle不符所以選B為什么不能選which形成非謂語(yǔ)
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