四六级考试

【单选题】{{B}}Passage OneQuestions 26 to 28 are based on the passage you have just hearD、{{/B}}
A、Graduate students.
B．Undergraduate students.
C．Professors.
D．Library employees.

网考网参考答案：B
网考网解析：
[听力原文] Which people are usually not allowed to use the stacks document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>