gwd-4-39

GWD6-Q39:

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

A.      satellites that is a part of 15 years effort of subjecting the interactions of Earth’s atmosphere, oceans, and land surfaces

B.       satellites, which is a part of a 15-year effort to subject how Earth’s atmosphere, oceans, and land surfaces interact

C.      satellites, part of 15 years effort of subjecting how Earth’s atmosphere, oceans, and land surfaces are interacting

D.      satellites that are part of an effort for 15 years that has subjected the interactions of Earth’s atmosphere, oceans, and land surfaces

E.       satellites that are part of a 15-year effort to subject the interactions of Earth’s atmosphere, ocean, and land surfaces

Why E?

To subject means the purpose, but it’s not saying the purpose here.

D首先satellite 就错了 要用复数

其次 that从句修饰years了

再次 effort to 表达目的很清楚 你从哪里看出原文没有表达目的的含义

为什么是表示purpose呢？

it's just telling me that what is that effort!

still don't understand!

如果你觉得尽力 努力不表示有目的的含义的话 那我也讲不清了