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 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
這題答案竟然給的是A實在太奇怪了
tested後面怎麼會接起that起來了呢???
我選E