第二节：完形填空
阅读下面短文，掌握其大意，然后从21 ~ 40各题所给的四个选项(A、B、C、D)中，选出最佳选项，并在答题纸上将该选项标号涂黑。
The boys were ready for an exciting week on the sea, but the trip did not start at all as they had ___21___.
It was the first day of their weeklong ___22___ journey on the Chesapeake Bay in Maryland, and they had already been ___23___ one storm. But that was ___24___ compared to the one they found themselves in ___25___ the same day.
