单元综合测评(三)(时间：100分钟；满分：120分).阅读理解(共15小题；每小题2分，满分30分)阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。A(2016湖北黄冈高二模拟)Dolphins live in a dark underwater world. Its often impossible to see each other or anything else around them, so sound plays an important role in their survival. To communicate with each other, dolphins produce all kinds of sounds.Only other dolphins understand what the sounds mean. Scientists havent uncovered their secret communication, except for one kind of whistle. It might last less than a second, but this whistle is a big deal. Why? Because these whistles are actually names of dolphinsand every dolphin has one. Scientists call these sounds a “signature whistle.” When other dolphins hear the whistle, they know which dolphin is calling.Dolphins often hunt by themselves but still need to stay connected to the group. Since they cant always see each other, dolphins use their signature whistles to check in with other dolphins hundreds of yards away. “In coastal areas, dolphins exchange whistles even when theyre a third of a mile apart，” says Greg Campbell，who studies animals. That means dolphins shout out to group members that might be nearly five football fields away.Whats amazing is who names the baby dolphin. Not the mother. Not an auntie dolphin or another group member. Scientists believe the baby dolphin itself comes up with the signature whistle. Like human babies, a baby dolphin plays with sounds throughout its first year. While testing its sound skills, a baby dolphin is doing something amazing. Its creating or figuring out its signature whistle. How or why it chooses its signature whistle is not clear. Studies show that most of the time the signature whistle is nothing like its mothers or group members whistles.When the baby dolphin is about a year old, its signature whistle is set. It repeats it often so the other dolphins learn to recognize it.Deciphering(破译) dolphin names is just the beginning of figuring out what dolphins communicate about. Do they chat about sharks? Discuss the tides? Maybe they even have a name for people. Someday scientists to decipher the rest of dolphins communication.1Sound is important for dolphins because of Atheir poor sense of directionBtheir living environmentCtheir strong enemiesDtheir big groups【解析】细节理解题。根据第一段的“Dolphins live in a dark underwater world.Its often impossible to see each other or anything else around them，so sound plays an important role in their survival.”可知，海豚生活在黑压压的水下，什么也看不到，这决定了它们得用声音进行交流。【答案】B2The dolphins signature whistle Alasts along timeBcan travel long distancesCis especially helpful in huntingDcan be recognized by other animals【解析】细节理解题。根据第三段的“dolphins exchange whistles even when theyre a third of a mile apart”和“shout out to group members that might be nearly five football fields away”可知，这种哨音可以传播很远。【答案】B3The author writes the text mainly to Aencourage readers to study dolphinsBtell readers how dolphins communicateCshow how lovely and clever dolphins areDintroduce a special sound made by dolphins【解析】推理判断题。根据第二段的“Scientists havent uncovered their secret communication，except for one kind of whistle”和最后一段可知，本文是要向读者介绍海豚发出的一种奇特声音的含义。【答案】D4A baby dolphin gets its name Asoon after it was bornBaccording to its sizeCall by itselfDwith the help of its group【解析】细节理解题。根据第四段的“a baby dolphin plays with sounds throughout its first year.While testing its sound skills，a baby dolphin is doing something amazing.Its creating or figuring out its signature whistle.”可知，小海豚的名字是根据它自己发出的哨音确定的。【答案】CBWorking women make up nearly half of the US. workforce, and 51 percent of professional workers, like doctors, lawyers, nurses and accountants, are female. While climbing the career ladder can be rewarding, it often comes with one big downside: weight gain!New research published this week in the International Journal of Obesity shows that working women are more likely to be overweight, and the more you work, the more pounds youre likely to pile on. Like many women, I work., a lot! As a selfemployed nutrition communications specialist, I sit at my desk, in front of a computer, for hours on end. Sitting alone is one of the worst things you can do for your health, and its directly linked to being overweight and increased fatness, so the fact that women in the workforce gain weight isnt that surprising. If you work, you have less time to move around. Obesity researchers are revealing many other ways that employment is harmful to your diet and waistline.In the International Journal of Obesity study, some 9，276 Australian women aged 4550 had their body weight and employment status monitored for two years. Results? Those who worked more than 35 hours were likely to gain weight compared to those who worked fewer hours or were out of the workforce. What s more, the more hours a woman worked in a week, the more wei