托福考试

【单选题】
A、To demonstrate the importance of public health laws.
B．To point out that without luck businesses will not succeeD、
C．To explain how traveling led to new inventions.
D．To illustrate the importance of having the right product at the right time.

网考网参考答案：D
网考网解析：
What is the purpose of the professor’s story document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>