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化學 高中

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品1擴汪|共人選有 | 3.巴拉劉 (英語 : Paraquat ) 學名為1,1-二甲基-4,4-聯喲氮化物,是一種快速作業的接觸 性殺草劑,別名草沉、克葵蹤、對人類而言屬於一種劇毒性農藥,極少量未稀釋巴拉廊溶 液 (約10c.c.) 即可造成不可復原性傷害。可由呢、金屬鈉、氣甲烷相互反應而生成。在 諸多針對人體的研究中證實,不慎食入少量或稀釋巴拉劉溶液,將導致腎衰竭、肝功能不 全、組織缺氧、顱神經及末梢神經麻痺,甚至導致呼吸衰竭死亡,國內外研究指出,長期 施用巴拉劉,與皿患巴金森氏症有關,部分國家因此對其使用嚴格管控或禁止。 (1)請依據右圖結構式判斷以下巴拉劉的化學式何者正確? c- 二 cr (A)Ci2Hi2CipN2 (B) Ci2HiiCpN2 (C) Ci2HisCpN2 (D)Ci2HisCiN2 (E)Ci2H2oCEN2 (2)阿沅今日做實驗室時,想配置2公升200ppm(密度大約為1)的巴拉廊,請問以下的方法何 者正確? (A)取2%的巴拉劉40毫升加水稀釋至2公 (B)取0.05M200毫升的巴拉劉加水稀釋至2公升 (C)量秤含1公克巴拉劉的溶液2公升及含0.6公克巴拉劉的溶液6公升混合均勻後取出2公升 (D)取4%的巴拉久40毫升及0.05M200毫升巴拉劉混合後加水至2公升“(E)取0.002M500毫升 的巴拉劉與0.001M1500毫升的巴拉劉混合 (3)若阿沅另取0.771%的巴拉劉溶液2公升(密度大約為1)欲進行定量分析,並取了0.05M200 毫升的硝酸銀與其反應 , 試問理論上可以得到的沉澱物為約幾公克 ? (A)0.48 (B)0.72 (C)1.44 (D)2.88 (E)4.32

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英文 高中

英文指考109 請問第20題為什麼是A? 然後alone跟alike差別在哪裡? 謝謝ଘ(੭ˊᵕˋ)੭ฅ ̑̑ෆ⃛

全全廬 全 AA人LVSDLU 2 Scientific discovery can take Various forms. One ofthem is “serendipity,” the Juck offinding vaJuaplje thingSs unintentionally. Serendipity was at Work when Alexander Fleming discovered penicijlin, fhe antlbliotic miracle. Fleming had long been known for having an untidy ]aboratory. One morning jm 1928, 了is _16_proved Very fortunate. It Was his first day coming back to Work afteralong Vacation. Before the yacation,hce _47 _悶 the Sink anumber ofpetri dishes in which he had been growing bacteria. While he was sorting trougfh 和he long __18 dishes of germs that morning, he observed that some ofthe dishes were contaminated wi也a fungus, Which had ruined his experiment. He was about to _19 the dishes, but he noticed that 同 one dish'_the bacteria had failed to grow in the area around the funeus. This accidentaJ finding gave rise fo subsedueht researeh that led to the disceovery ofpenicillin一a drug that has since saved m記ions of Jiyes. Chanee _20_, however may not be enough to make key discoveries Jike this. The scienftist musf and open mind to detect the importance of the unforeseen incident and tfo use have a prepared constructively. (B) opinion (C) seandal (D) disorder 及 0之16. (6) me明 人和 (C) was piling (D) might have piled 生 贍 17. (A) 和 e 0 (C) unattended (D) misunderstood 〔.18.(A) disable 主 (C) eateh up (D)eany on 19. (A) toss out (C) above (Dbxahead (B) alike 292 ,,歸過填(古10分)

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