Khóa học phần nghe toefl itp 20 câu sau theo bài Hướng dẫn và trắc nghiệm nghe toefl itp thuộc 20 câu sau – Mã 97104750 30 Th9 Press to start in video What is the purpose of the talk? To provide background for the next reading assignment. To demonstrate the use of a new measurement device. To explain the answer to an examination question. To review what students know about volcanic activity. What important discovery about seismic waves does the instructor mention? They occur at regular intervals. They travel through the Earth’s interior. They can record the Earth’s internal temperature. They can withstand great heat. What did the study of seismic vibrations help geologists learn more about? When the Earth was formed. How often a volcano is likely to erupt The composition of the Earth’s interior. Why lava is hot. What did P and S waves help scientists discover about the layers of the earth? How hot they are. What purpose they serve. Where earthquakes form. How deep they are. Loading … [irp][related_posts_by_tax title=""]
