Ⅱ 语言知识及应用 (共两节，满分35分)
第一节 完形填空 (共10小题；每小题2分，满分20分)
阅读下面短文，掌握其大意，然后从21～30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
Sea turtles have been on Earth for millions of years, but they may soon die out. The main 21 to them is people who kill them for food, according to Dr. Wallace J. Nichols of the University of California.
But the latest news may 22 turtle hunting: Dr. Nichols has found that sea turtles 23 a lot of pollution from the ocean. This pollution is unhealthy for both turtles and humans. It can cause __24__ damage to their bodies and lead to death. Research shows that many people get sick and even die from eating sea turtle meat.
