大全5-18 （没问过）

        Radio interferometry is a technique for studying details of celestial objects that combines signals intercepted by widely spaced radio telescopes. This technique requires ultraprecise timing, exact knowledge of the locations of the telescopes, and sophisticated computer programs. The successful interferometric linking of an Earth-based radio telescope with a radio telescope on an orbiting satellite
                        was therefore a significant technological accomplishment.

Which of the following can be correctly inferred
                        from the statements above?

(A) Special care was taken in the launching of the satellite so that the calculations of its orbit would be facilitated.

(B) The signals received on the satellite are stronger than those received by a terrestrial telescope.

(C) The resolution of detail achieved by the satellite-Earth interferometer system is inferior to that achieved by exclusively terrestrial systems.

(D) The computer programs required for making use of the signals received by the satellite required a long time for development.（E）

(E) The location of an orbiting satellite relative to locations on Earth can be well enough known for interferometric purposes.

答案E. 这个infer怎么觉得没套路啊？？

我觉得类似于Must be True.

Ok...This technology Radio interferometry  is based on three things, one of which is "exact knowledge of the locations of the telescopes".  And since the linking between an Earth-based radio telescope and a radio telescope on an orbiting satellite are built using this technology, then the relative location must be well known because that's what this technology is all about "exact knowledge of the locations of the telescopes".  . 

Hope this helps =)

噢！把文章和E连起来又看了一遍，终于明白了！

谢谢阿

再请问一下NN们E该怎么翻译呢？

The location of an orbiting satellite relative to locations on Earth can be well enough known for interferometric purposes.

为了interferometric目的，相对于地球上的位置的运行的卫星的位置必需得到充分的了解？感觉不通顺。。就是后面加了一句relative to locations on earth才觉得有问题，觉得relative to是不必要的