1．In the Persian Gulf area，oil is found in ________ and its production has been able to keep up with world demand.
A．abundant B．abundance C．elegance D．efficiency
解析：in abundance意为“大量，丰富”。句意为：波斯湾地区石油储量丰富，其产油量能满足世界的需求。A项abundant是形容词，不能作介词的宾语；C项elegance意为“优雅”；D项efficiency意为“效率”；C、D两项一般都不与in连用。
答案：B
2．The last time they went to Scotland was in May，________ the weather was beautiful.
A．that B．when C．where D．which
解析：此题考查定语从句。when引导定语从句修饰先行词May。句意：他们最后一次去苏格兰是在五月，那时候天气非常好。
答案：B
