A: To emphasize the deadliness of a huge dust cloud.
B: To show students the importance of the food chain.
C: To describe the process of photosynthesis.
D: To explain the sequence the extinctions occurred in.
举一反三
- Why does the professor say this A: To express his uncertainty about the facts. B: To criticize the students’ neglect. C: To explain the importance of the constitution. D: To encourage students to express their opinions.
- Why does the professor say this: A: To praise the excellent food at Silverwood B: To comment on the man’s summer workload C: To predict which courses the student will like D: To explain why the summer program is popular
- Why does the professor say this A: To correct something she said earlier. B: To explain what she just introduced. C: To explain what is wrong with a particular theory. D: To remind the students of something discussed earlier.
- Why does the professor mention the tango of Argentina A: To emphasize the importance of the tango in Argentina. B: To explain the music of different countries, C: To provide background information for jazz. D: To illustrate that every country has its original music.
- Why does the professor say this: A: To provide an example of the topic. B: To answer a student’s previous question. C: To show that a popular idea is not true. D: To explain how people understand art.
内容
- 0
Why does the professor say this: A: To explain why dictators have so much power B: To distinguish between leaders and power holders C: To compare qualities of dictators and robbers D: To warn students about the presence of danger
- 1
Listening 4 "Professor’s Office" {$mediaurl} Why does the professor say this: A: To indicate that he is getting impatient B: To encourage the woman to continue C: To show that he does not understand D: To correct the woman’s previous comment
- 2
Match each section of the passage to its purpose.Paragraphs A-B _______ A: to explain the importance of studying blue holes B: to show why blue hole exploration is challenging C: to describe the structure of a blue hole D: to explain what blue holes are and how they are formed
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Why does the professor say this: A: To dispel a common misconception. B: To compare two types of white dwarfs. C: To warn students about the difficulty of the topic. D: To ask students to analyze a complex situation.
- 4
Why does the professor say this A: To express uncertainty about the previous statement. B: To end the discussion on the definition of marketing. C: To check the students’ understanding of marketing. D: To find out what the students prefer.