第 1 题 · 六级
The two pictures overlap in the middle, which the artist has carefully avoided.
核心词：overlap ˌəʊvəˈlæp v./n. 重叠
两幅画在中间重叠了，艺术家一直小心避免。
现在完成时主谓 + 介词短语 + which 从句（现在完成 + 副词）短语 overlap with短语 the overlap of
The two pictures ___ in the middle, which the artist has carefully avoided.
第 2 题 · 六级
The students entered a numerical code, which the exam system has required for login.
核心词：numerical njuːˈmerɪkl adj. 数字的，数值的
学生们输入了一串数字密码，考试系统要求登录时使用。
现在完成时主谓宾 + which 从句（现在完成 + require for）短语 a numerical code短语 numerical analysis
The students entered a ___ code, which the exam system has required for login.
第 3 题 · 六级
The smell of flowers permeated the whole room, which the hostess has always loved.
核心词：permeate ˈpɜːmieɪt v. 渗透，弥漫
花香弥漫整个房间，女主人一直很喜欢。
现在完成时主谓宾 + which 从句（现在完成 + 副词）短语 permeate through短语 permeate the air
The smell of flowers ___ the whole room, which the hostess has always loved.
