语法填空
阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
Titanic
On April 10th, 1912, Titanic, sailed for New York . At that time, she was not only 61 largest ship that had ever been built, 62 she was also regarded as unsinkable, for she had 16 watertight compartments(防水舱). Even if two of these were flooded, she would still be able 63
