自然科学 - 2026 进行中

科目: 自然科学
级别: VII (I级最简单，XII级最难)
类别: 大学生
试题语言: English
题数: 15
问题示例: A sealed terrarium contains soil, water, plants, and air. After several weeks, which statement best explains why the total mass remains nearly constant? Matter is continually recycled within the closed system., Plants create new matter from sunlight alone., Water disappears when plants absorb it., Oxygen is converted entirely into soil.