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课时达标·训练
实践训练是及时巩固所学知识的途径。指导学生用15分钟基础检测，强化知识理解、检测学习效果，及时查缺补漏，全面掌握知识、实现能力迁移，提高应用能力！
Ⅰ. 根据所给首字母及中文释义写出各单词的完整形式
1. It is true during their e________（探险） that they often faced difficulties and dangers.
2. Many countries have signed the treaty to protect it from c________ (商业的)use.
3. The government is trying to b________（平衡）people’s incomes.
4. “Earth Hour” aims to p________（促进） people’s awareness of the protection of the environment.
5. A great part of sunlight is t________ (留存)in the atmosphere.
6. Students soon a________（适应）to the new school life.
7. Within two years they had tamed this i________ (荒凉的)landscape.
8. Water was found at a d________ (深度)of 30 feet.
