题目内容：
The famous explorer _________.A. had crossed Antarctica and the Atlantic by balloon
B. had traveled all over the world
C. had walked across Death Valley
D. had ever been a millionaire
参考答案：
选择题：The famous explorer _________.A. had crossed Antar
- 题目分类：河北工业大学大学英语
- 题目类型：选择题
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A. had crossed Antarctica and the Atlantic by balloon
B. had traveled all over the world
C. had walked across Death Valley
D. had ever been a millionaire