VIII:
Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 41 to 50
Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes ___41___ ecosystems. If there is too ___42___ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that ___43___ it may also die or move away. Some changes are good for ecosystems. Some pine forests need ___44___ for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds___45___. Polluting the air, soil, and water can harm ecosystems. Building ___46___ on rivers for electric power and irrigation can harm ecosystems ___47___ the rivers. Bulldozing wetlands and cutting down ___48___ destroy ecosystems. Ecologists are working with companies and governments to find better ways of ___49___ fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people ___50___ causing harm to ecosystems.
Trả lời câu hỏi dưới đây:
_________(45)
Đáp án là A. let something out: để lộ