Unit 4 Earthquakes（B卷）-2019-2020学年高中英语必修一【创新思维】同步AB卷(人教版)

Unit 4　Earthquakes B卷·能力提升卷 本试卷共120分，考试时间100分钟。 第一部分 第二部分[来源:学科网ZXXK] 第三部分 总　分 分数 第一部分　阅读理解(共两节，满分40分) 第一节(共15小题；每小题2分，满分30分) 阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。 A If you are interested in seeing a more unique dolphin，here is one for you to check out.The Risso's dolphin is very different in appearance from most of the other species.This is one of the few dolphin species where the males and females are almost going to be the same in size instead of the males being larger. You will find this dolphin out there in a variety of colors.When the young are born，they are gray or brown in color with white areas.They may have yellow around the muzzles and white around the flippers.As the baby dolphins get older，they start to turn silver in color and then to a dark black color.They may keep their patches(色斑)of white though as they mature.However，as they get to the age of maturity，they will get lighter. These dolphins feature(以……为特色)teeth that are pointed in the upper jaw.In the lower jaw though they have 2 to 7 pairs of peg­like teeth.This helps them with getting their prey，when they need to fight off predators(捕食者)，or when they are competing for mates or other resources. The Risso's dolphin is found around the world in the warm tropical waters.They tend to spend most of their time in the deeper waters so it isn't often you will see them close to the shore.In addition to all of the oceans，they are also found around the Red Sea，the Mediterranean Sea，and the Persian Gulf.It is a myth though that they live in the Black Sea.There has never been a confirmed sighting of them in that body of water. Even though these dolphins tend to stay away from boats in the water，they are known to surf bow waves (船首两侧的浪花)．Since they don't come to the shore often，there is little really known about the overall behavior of the Risso's dolphins.They are known to be very social though just like other species of dolphins. 1．Which of the following can best describe the Risso's dolphin? A．St