第 1 题 · 高考
The country faced a serious crisis, and the people worked together to solve it.
核心词：crisis ˈkraɪsɪs n. 危机
这个国家面临严重危机，人民齐心协力解决它。
一般过去时face a crisis短语 an economic crisis
The country faced a serious ___, and the people worked together to solve it.
第 2 题 · 高考
The scientist demonstrated the theory with a simple test, and everyone was amazed.
核心词：demonstrate ˈdemənstreɪt v. 证明；演示
科学家用一个简单实验证明了理论，大家都惊叹不已。
一般过去时demonstrate短语 demonstrate how
The scientist ___ the theory with a simple test, and everyone was amazed.
第 3 题 · 高考
The two schools made a joint effort to hold the party, and it was a great success.
核心词：joint dʒɒɪnt adj. 共同的；联合的 n. 关节
两校联合举办聚会，取得了巨大成功。
一般过去时a joint effort短语 joint venture
The two schools made a ___ effort to hold the party, and it was a great success.
