Question

The first decade in the 21st century is the one ______ many significant advances are made in China.

A．that

B．in which

C．which

D．where

Answer 1

B

考查定語從句，先行詞是The first decade in the 21st century表示時間，定語從句中缺少的是時間狀語，用when或in which引導(dǎo)定語從句，句意是：21世紀的第一個十年是中國取得很多重大進步的時間。選B。