【单选题】クラスメートの代表 __________ 今回のスピーチ大会に参加する予定だ 。
【单选题】Jim failed his driving test on the first _________________.
【简答题】Part B For this part, you should write a composition with the title 'Pollution in Our City'. Based on the following: (1) Pollution in our city is getting worse and worse. (2) People have realized the ...
【单选题】Jim ______ his strict father, for he failed in the examination once again.
【单选题】It was in 1921 our Party was founded.
【简答题】若混合气体中氨的体积分率为0.5,其摩尔比为()A. 0.5 B. 1 C. 0.3 D. 0.1