选修6 unit 4 Global warming
1．(2012·新课标全国高考)Film has a much shorter history，especially when______such art forms as music and painting.
A．having compared to B．comparing to
C．compare to D．compared to
解析：句子的主语是film，它和compare之间是被动关系，所以要用被动形式。因此只能选择D项，“when compared to...”相当于when引导的状语从句的省略，补全后为：when it is compared to...。句意：电影的历史短得多，尤其是它与诸如音乐、绘画等艺术形式相比较时。
答案：D
2．(2012·江西高考)You can borrow my car______you promise not to dri ve too fast.
A．unless B．even if
C．in case D．as long as
解析：unless除非，如果不。如果用unless，那么语意前后矛盾；even if即使，引导让步状语从句；in case以防，万一，引导目的、条件状语从句；as/so long as只要，引导条件状语从句，符合语意和语境。句意：只要你承诺不开得太快，你就可以借用我的车。
答案：D
