第 1 题 · 高考
The exploration of the deep sea is difficult, because the water is very dark and cold.
核心词：exploration ˌekspləˈreɪʃn n. 探测，探索
深海探测很困难，因为海水又黑又冷。
一般现在时原因状语从句短语 the exploration of短语 space exploration
The ___ of the deep sea is difficult, because the water is very dark and cold.
第 2 题 · 高考
The artist carved a beautiful bird out of wood, which took him three days.
核心词：carve kɑːv v. 雕刻
艺术家用木头雕刻了一只漂亮的鸟，花了他三天时间。
一般过去时which 非限制性定语从句短语 carve...out of短语 carve wood
The artist ___ a beautiful bird out of wood, which took him three days.
第 3 题 · 高考
Each school is an independent entity, which manages its own affairs.
核心词：entity ˈentəti n. 实体
每所学校都是独立的实体，自行管理自己的事务。
一般现在时which 定语从句短语 an independent entity短语 a separate entity
Each school is an independent ___, which manages its own affairs.
