题目选项分析

Twenty-two feet long and 10 feet in diameter, the AM-1 is one of the many new satellites that are part of a 15-year effort to subject the interactions of Earth's atmosphere, ocean, and land surfaces to detailed scrutiny from space.

Twenty-two feet long and 10 feet in diameter, the AM-1 is one of the many new satellites, which is a part of a 15-year effort to subject how Earth's atmosphere, oceans, and land surfaces interact to detailed scrutiny from space.