问题


There is a single choice question about high school microeconomics. Answer the question by replying A, B, C or D.
Question: Which of the following will shift the supply curve for textbooks to the left?
A. A decrease in the demand for a substitute in production
B. A decrease in the number of buyers
C. An increase in printing costs
D. Expectations of future surpluses
Answer:

答案

模型 模型答案 正确答案
金声玉亮2.0

C. An increase in printing costs will shift the supply curve for textbooks to the left, as it increases the cost of production and makes suppliers less willing to supply textbooks at each price level.		 C
deepseekr1

The supply curve for textbooks shifts left when there is a decrease in supply. Factors causing this include increased production costs.

- **A**: A decrease in demand for a substitute in production would lead firms to produce more textbooks, increasing supply (right shift). **Incorrect**.
- **B**: A decrease in the number of buyers affects demand, not supply. **Incorrect**.
- **C**: Higher printing costs raise production expenses, reducing the quantity supplied at each price. This shifts supply left. **Correct**.
- **D**: Expectations of future surpluses incentivize selling more now, increasing current supply (right shift). **Incorrect**.

Answer: **C**		 C
gpto1 C C
GPT-4o C. An increase in printing costs C
llama3.1-70B-Instruct

C		 C
llama3.1-405B-Instruct

C. An increase in printing costs will make it more expensive for suppliers to produce textbooks, leading to a decrease in the quantity supplied at each price level, shifting the supply curve to the left.		 C
DeepSeek-Coder-V2 C. An increase in printing costs C
Qwen2-72B-Instruct C. An increase in printing costs C
baichuan4 C C
doubao C

An increase in printing costs will increase the cost of production for textbooks, which will lead to a decrease in supply and shift the supply curve to the left. A decrease in the demand for a substitute in production would not directly affect the supply curve of textbooks. A decrease in the number of buyers affects the demand curve, not the supply curve. Expectations of future surpluses would also not directly cause an immediate shift to the left of the supply curve.		 C
minimax C. An increase in printing costs C
kimi C. An increase in printing costs C
wenxinyiyan C C
zhipu C. An increase in printing costs

An increase in printing costs would make it more expensive to produce textbooks, leading to a decrease in the quantity supplied at each price level, which shifts the supply curve to the left. The other options do not directly affect the supply curve in the same way.		 C
gpto1 C C