2． ______he has limited knowledge, the old worker has a lot of experience.
A. Since B. Unless C. As D. Although
(全国1)
1． See the flags on the top of the building？That’s ______ we did this morning.
A. when B. which C. where D. what
47．选A。and引导并列句，再此表示补充说明。
46．选A。what引导主语从句。
45．选D。studying 做定语；of whom引导定语从句。
44．选C。that引导同位语从句。
43．选A。before引导时间状语从句，译做“未来得及”。
42．选B。that引导同位语从句。
41．选C。or引导并列句，“否则”。
40．选D。where引导地点状语从句。