1. What is the lecture mainly about?
- A. A potential way of predicting the intensity of solar activity
- B. The weakening of the Sun’s magnetic field over time
- C. The difference between weather on the Sun and on Earth
- D. Different theories about the location of sunspots
2. What does the professor say is the main source of solar storms on the Sun?
- A. A collision between the Sun’s two solar conveyor belts
- B. The creation of new sunspots near the Sun’s poles
- C. The excess radiation the Sun sends into space
- D. The movement of the Sun’s magnetic field
3. Why does the professor mention Earth’s Great Ocean Conveyor Belt?
- A. To compare the flow of the gas on Earth and on the Sun
- B. To point out a common misconception about sunspots
- C. To help students visualize a similar phenomenon on the Sun
- D. To point out difference between the magnetic fields of the Sun and Earth
4. How do scientists measure the speed of the Sun Conveyor Belt?
- A. By analyzing the direction of the solar wind
- B. By analyzing the concentration of gases on the Sun
- C. By measuring the speed of radiation leaving the Sun’s surface
- D. By tracking the changing locations of sunspots
5. Why is the ability to predict the strength of solar storms important to scientists?
[CHOOSE 2 ANSWERS]
- A. It enables scientists to predict changes in Earth’s oceanic currents
- B. It helps scientist to determine the best time for space exploration
- C. It allows scientists to accurately calculate the strength of the Sun’s magnetic field
- D. It alerts scientists to potential disruptions of communications systems on Earth
6. What is the professor’s attitude about using observations of the Sun’s Conveyor Belt to predict future solar storm activity?
- A. They are not at all useful for predicting solar activity
- B. They are helpful only in making general predictions
- C. They are best used to determine the time of solar maximum
- D. They should be adapted for the study of Earth’s ocean Conveyor Belt
答案：A D C D BD B