【評論主題】7.高雄氣爆的元兇據查為丙烯,而丙烯的化學式為C3H6,其結構式如附圖,有關於丙烯的性質,下列何者正確?   (A)和乙醇(C2H5OH)都同樣屬於烴類(B)和甲烷(CH4)都同樣易溶於水(C)燃燒後

【評論內容】(A) 乙醇為醇類(B) 甲烷為烴類，烴...

【評論主題】21. Ken didn't go to work           he went to a doctor.(A) so (B) then(C) or (D) because

【評論內容】he went to a doctor ★★☆☆☆........