2017年9月24日
decrease v. 减少;减小;降低 n. 减少;降低
range n. 范围;射程;山脉;排;一系列
v. 排列;使…站在某一方;延伸
previous adj. 以前的;先于;在 ... 之前
basis n. 基础;根据;基底
L2 Chemistry
听力题目：
1. What is the main purpose of the lecture?
A. To discuss the advantages of heating substances in microwave ovens
B. To discuss recent research that may lead to improved microwave ovens
C. To point out problems in the use of superheating to produce medicines
D. To prepare students for upcoming experiments in the laboratory
2. Why does the professor talk about making coffee?
A. To describe how he dissolved coffee particles to prevent nucleation
B. To introduce the concept of microwave superheating
| 2017年9月24日 | |
C. To reassure the students that some of the experiments will be as simple as making coffee
D. To warn the students not to superheat liquids containing dissolved chemicals
3. Why does the professor mention that once nucleation has occurred, added heat is used to convert liquid water into water vapor?
A. To explain why the temperature of water does not rise beyond the boiling point when water is heated in a metal pot on a stove
B. To point out similarities in heating liquids using microwave ovens and using conventional stoves
C. To explain why water that is exposed to microwaves will appear to be hot when it really is not
D. To point out that it is better to avoid making coffee in a microwave oven
4. The professor talks about using microwave ovens for superheating during the students' laboratory experiments. What two possible results of superheating does he mention?
Click on 2 answers.
A. An increased flow of electrical current through the superheated liquid
B. An acceleration of reaction between chemicals in the superheated liquid
C. The decomposition of chemicals in the superheated liquid
D. The creation of tiny scratches and dents on the interior surface of the container
5. What is the professor's attitude about the use of microwave ovens by pharmaceutical companies in the production of medicines?
A. The use of microwave ovens is hazardous because it prevents control of temperatures.
B. The use of microwave ovens produces satisfactory results but is not worth the added expense.
C. The use of microwave ovens may allow companies to produce medicines more efficiently than traditional heating methods do.
D. More research should be done before replacing traditional heating equipment with microwave ovens.
6. According to the professor, what two laboratory practices that are used by pharmaceutical companies will students also use in their experiments?
Click on 2 answers.
A. Using containers that have been developed to ensure nucleation
B. Using a new type of microwave to superheat all liquids
C. Using smooth containers that have been specially designed for microwave use
D. Using sealed containers to allow the pressure inside to increase during heating
听力答案：
D/B/A/BC/C/CD
C1
student & facilities director
听力题目：
1. Why does the student go to see the facilities director
A. To find out when the current parking garage construction will be completed
B. To provide student input about the lack of parking accommodations on campus
C. To get information about the upcoming Oak Tree dormitory renovations
D. To present ideas that could improve living conditions in the Oak Tree dormitory
2. What does the student say about the parking garage?
Click on 2 answers.
A. It will be very cold in the winter.
B. It will be convenient.
C. It will be unpleasant to look at.
D. It will increase nearby traffic.
3. Why does the facilities director mention the head groundskeeper?
A. To acknowledge that the student's comments are worth consideration
B. To point out that this year's budget for planting trees has already been spent
C. To identify the person the student will need to meet with next
D. To illustrate how many people are involved in building the parking garage
4. What point does the student make about Tommy Reynolds?
A. He came up with the idea to plant trees between the dormitory and the garage.
B. He is interested in attending the facilities department meeting to represent the dormitory residents' interests.
C. He convinced the dormitory residents to get together to write down their concerns.
D. He provided the calculations that support renovating the dormitory.
5. What is the facility director's attitude about installing additional insulation?
A. She is pleased that she has student support for the project.
B. She hopes the project can be completed before the end of the year.
C. She is doubtful that the current residents would benefit from the modification.
D. She does not believe that there will be sufficient cost savings.
听力答案：
D/BC/A/D/C/
C2
student & academic advisor
听力题目：
1. Why does the student go to see his academic adviser
A. He wants to drop two of the courses he is taking this semester.
B. He wants to get help with two of the classes he is taking this semester.
C. He wants to find out which classes he is required to take next semester.
D. He wants to change his course selections for next semester.
2. What is the academic adviser's response when she learns that the student has registered for four courses that require final papers
A. She feels she should have noticed this situation earlier.
B. She feels the courses will help the student improve his writing skills.
C. She thinks the courses will be easier than the student thinks.
D. She thinks the student should have taken more care when selecting his courses.
3. What factor helps the student decide which language he will study?
A. It was the only language class with seats still available.
B. It was the language he studied in high school.
C. His friend will be studying the same language.
D. His friend recommended a professor who teaches the language.
4. What two requirements must students have fulfilled before they can take a precalculus course at the university?
Click on 2 answers.
A. They need to have received permission from the professor who will teach the course.
B. They need to have taken three years of mathematics classes in high school.
C. They need to have passed a mathematics test given by the university.
D. They need to have taken three mathematics courses at the university.
5. What class does the student imply he feels most confident about doing well in
A. Introduction to World Poetry
B. The European Novel
C. Precalculus
D. Latin
听力答案：
D/A/C/BC/C
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