【2020年】
1. （2020•江苏卷）Many lessons are now available online, from __________ students can choose for free.
A. whose B. which C. when D. whom
【答案】B
【解析】考查定语从句。句意：许多课程现在都可以在网上找到，学生们可以从中免费选择。此处是非限定性定语从句，先行词是many lessons，关系词在从句中做介词from的宾语，应使用关系代词which引导。故选B。
3. （2020•天津卷）Dr. Rowan, __________ secretary resigned two weeks ago, has had to do all his own typing.
A. whose B. of whom C. of which D. which
【答案】A
【解析】考查定语从句。句意：罗文博士的秘书两周前辞职了，他现在只能自己打字。______ secretary resigned two weeks ago是非限制性定语从句，修饰Dr. Rowan，引导词在从句中作定语，表示“Dr. Rowan’s ”，表示“……的” ，应用关系代词whose引导该从句，故选A。
