Unit 5 Into the wild 单元综合测-2023-2024学年高一英语【课时轻松练·单元综合测】（外研版2019必修第一册）

· Book 1 Unit 5 Into the wild · 单元综合测 学校:___________姓名：___________班级：___________考号：___________ 一、阅读理解 A Each year, people buy millions of aquarium (水族箱) fish. But somehow most of the fish died within weeks or even within hours after you had bought them. For sure, fish are weak creatures compared to us. It does not mean they died for no reason at all. Since fish have no body heat, they are sensitive to sudden changes of water temperature. Water PH and water hardness can also affect them if there is a sudden change. Most of the quick deaths of fish are due to shock. Tap water is not a perfect choice for aquarium fish because of the chlorine (氯) in the tap water, which can kill the fish. So the best way is to just put the tap water in the sun for a few days. Fish need oxygen in the water. They will die if the oxygen in the aquarium runs out. Several things can cause it to happen. The aquarium is too small, that is, less water means less oxygen. The aquarium is too crowded, for the more fish you have, the more oxygen they need. The temperature is too high, because the higher the water temperature, the less dissolved oxygen. Overfeeding the fish can cause a digestive (消化的) problem and kill the fish directly. More food than it is needed can also cause water pollution and create more harmful waste which will kill the fish too. Feed the fish only once a day, with no more food than they can eat in less than a minute. In this case, less is better. 1．What’s the function of paragraph one? A．Raising a question. B．Putting forward an argument. C．Posing a problem. D．Listing the causes of the problem. 2．Why are fish sensitive to sudden changes of water temperature? A．They are warm-­blooded. B．They have no body heat. C．They live in the water. D．They are very weak. 3．What’s the purpose of putting tap water in the sun? A．To let out the chlorine. B．To warm the water. C．To kill the viruses. D．To make the water clear. 4．How is the passage mainly developed? A．Problem—­solution patter