题目内容
Marco Polo and his family established an overland trade route to China, but it was ______ the firstsea route was discovered that travel would become easy.
<A. until B. not before C. after D. not until
答案:D
提示:
提示:
| 这句话是一个倒装句,正确的语序是the travel would not become
easy until the first sea route was discovered.
|
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