1 . In Portland, dozens of people hiked around Mountain Tabor Sunday morning, walking dogs or jogging before the heat became u______.(根据首字母单词拼写)

2 . The long-term natural forces, like wind, water and temperature, can gradually wear down heritage sites ____________ natural disasters can lead to the destruction of them. (用适当的词填空)

3 . With coral reefs ______ threat from climate change the scientists are now advocating fewer people on islands to protect some of the most diverse ecosystems in the ocean. （用适当的词填空）

4 . I _________(see) the film “The Old Man and the Sea” with my desk mate, but he suddenly fell sick. (所给词的适当形式填空)

5 . ___________(urge), without stabilizing my body position, I rushed to pull my parachute (降落伞), only to have it wrap around my leg. (所给词的适当形式填空)

6 . I find that the works of English literature are so challenging for me. What _________(填一个情态动词) I do next? (用适当的词填空)

7 . We were about to leave ________ one of our friends called and said he would visit us soon. (用适当的词填空）

8 . There are a lot of conflicts going on between teenagers and their parents, but a lot of studies show that the conflicts are __________ (resolution) a lot more when they turn into a dialogue. (所给词的适当形式填空)

9 . When ________ (compare) the famous actors’ income with that of those outstanding doctors and researchers, many people believe it is not justified. (所给词的适当形式填空)

10 . All the park’s dinosaur tracks are preserved in limestone(石灰岩), which protects them________some degree. (用适当的词填空)