GWD 9-19

After more than four
decades of research and development, a new type of jet engine is being tested
that could eventually propel aircraft anywhere in the world within two hours or
help boost cargoes into space at significantly lower costs than current
methods permit.

A.       
tested that could eventually propel aircraft anywhere in
the world within two hours or help

B.        
tested that could eventually have the capability of
propelling aircraft anywhere in the world within two hours or to help

C.       
tested, eventually able to propel aircraft anywhere in the
world within two hours, or helping

D.       
tested, and it eventually could propel aircraft anywhere in
the world within two hours or helping

E.        
tested, and it could eventually have the capability to
propel aircraft anywhere in the world within two hours or help

答案选A，请问that可以跨过谓语修饰N么？