是一道考试题目，请以此为标题，写一篇包含各种题型题目和答案的内容

　　 选择题

　　1. Which of the following is not a primary color?

　　a. Red

　　b. Blue

　　c. Green

　　d. Yellow

　　答案及解析：

　　d. Yellow

　　Primary colors are red, blue, and green in the RGB color model.

　　2. Who is the author of the novel "Pride and Prejudice"?

　　a. Charles Dickens

　　b. Jane Austen

　　c. Leo Tolstoy

　　d. Mark Twain

　　答案及解析：

　　b. Jane Austen

　　"Pride and Prejudice" was written by Jane Austen.

　　 填空题

　　3. The capital city of France is __________.

　　答案及解析：

　　Paris

　　Paris is the capital city of France.

　　4. The formula for the area of a rectangle is length multiplied by __________.

　　答案及解析：

　　width

　　The area \( A \) of a rectangle is calculated as \( A = \text{length} \times \text{width} \).

　　 判断题

　　5. The Earth is the fifth planet from the Sun.

　　a. 对

　　b. 错

　　答案及解析：

　　b. 错

　　The Earth is the third planet from the Sun.

　　6. All mammals lay eggs.

　　a. 对

　　b. 错

　　答案及解析：

　　b. 错

　　Most mammals give birth to live young; they do not lay eggs.

　　 论述题

　　7. Discuss the impact of climate change on global agriculture.

　　答案及解析：

　　Climate change has significant effects on global agriculture. Rising temperatures, shifting precipitation patterns, and increased frequency of extreme weather events pose challenges to crop yields and livestock production. Farmers are adapting by changing planting practices, using more resilient crop varieties, and adopting sustainable farming techniques. Policy interventions and international cooperation are also crucial in mitigating the adverse impacts of climate change on food security and agricultural sustainability.

　　这篇文章包含了选择题、填空题、判断题和论述题，每道题目都有明确的答案和解析，确保内容清晰易懂，符合搜索引擎优化的要求。

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