According to the passage, prediction markets can be more effective when ______.
A. firms can offer the most successful traders bigger prizes
B. the application of prediction results can be felt by employees
C. firms can keep the prediction as a novelty to staff
D. prediction is made by authoritative experts in certain field
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To keep the Earth out of warm, we can destroy the Methane with ______.
A. greenhouse gas
B. sunlight
C. water
D. oxygen
M: Look at the prices of fruits and vegetables. No wonder they are so expensive.
Q: What are they talking about？
(13)
A. The effects of the flood.
B. The prices of fruits and vegetables.
C. The cause of the flood.
D. Floods of the past twenty years.
听力原文：W: Let's talk about the preparations for the party.
M: Right. I think we really need to plan better and get things done in advance this time. Still remember what a mess it was at the last party？
Q: What do we know about the last party from the conversation？
(17)
A. It was pretty good.
B. It was rather dull.
C. It was not well organized.
D. It was attended by many people.
We learn from the passage about Koch Industries that ______.
A. it signed contracts with others only on two issues
B. it believes markets can totally replace other forecasting techniques
C. its business includes goods trading, pesticide, fertilizers and chemical
D. it has applied prediction for less than a year
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