哪位大牛知道gwd中的Pluto orbit那道题

I used the Search function by Windows and here are what I come up with.

The Near Earth Asteroid Rendezvous (NEAR) spacecraft will orbit the asteroid Eros for a year, slowly moving closer to the surface of the object to make ever more precise measurements that scientists hope will enable them to understand how the solar system formed some four billion years ago.

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1. to make ever more precise measurements that scientists hope will enable them to


2. to make ever more and more precise measurements, which scientists are hoping to enable them


3. for making ever more precise measurements, and scientists hope that they will be able to


4. with the purpose of making more precise measurements than ever, and which scientists hope will enable them to


5. in order to make more precise measurements than it ever did, and scientists are hoping they will be able to

Q30:

Unlike the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries, a permanently orbiting space station will have to generate its own electricity.

A. the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries

B.  the shuttle and earlier spacecraft, with sufficient enough power in fuel cells and batteries for their short flights

C.  the short flights of the shuttle and earlier spacecraft, which enabled them to carry sufficient enough power in fuel cells and batteries

D. the shuttle and earlier spacecraft, which were capable of carrying sufficient power in fuel cells and batteries for their short flights

E.   the flights of the shuttle and earlier spacecraft, whose shortness allowed them to

carry sufficient power in fuel cells and batteries                                                        Answer: