基礎(chǔ)提升：unit2-wild-life-protection-sectionⅰ--word版含解析-wenkub
2025-04-05 05 本頁面
【正文】 out each other, they do better together.Sometimes an animal has a plant partner. The relationship develops until the two partners cannot manage without each other. This is so in the corals of the sea. In their skins they have tiny plants which act as “dustmen”， taking some of the waste products from the coral and giving in return oxygen which the animal needs to breathe. If the plants are killed, or are even prevented from receiving light so that they cannot live normally, the corals will die.1．Some birds like to sit on a sheep because ________. A．they enjoy travelling with the sheepB．they can eat its parasitesC．they depend on the sheep for existenceD．they find the position most fortable2．The underlined word “they” in the last sentence of the first paragraph refers to ________.A．birds and parasites B．parasites and sheepC．birds and sheep D．sheep, birds and parasites3．We learn from the text that corals depend on plants for ________.A．fort B．light C．oxygen D．food4．What does the second paragraph mainly discuss?A．Some animals and plants develop their relationship easily.B．Some animals and plants depend on each other for existence.C．Some plants depend on each other for food.D．Some animals live better together.Ⅱ 完形填空Wildlife has been greatly threatened in the modern age. There are species (物種) that are __1__ every day. The white naped crane is a typical example. So scientists are trying their best to __2__ the species from going out of existence.Chris and Tim work at a zoo, helping endangered cranes with their __3__. Emma, a female crane, has been in their __4__ since she arrived in 2004.Born at an international crane foundation, Emma was __5__ by human caretakers. This led to an unexpected __6__， though she had a wonderful time there. Emma had __7__ taken herself as a crane and bee deeply attached to humans. She __8__ to live with male cranes, and even had a __9__ for killing some of the
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