托福考试

【单选题】
A、To indicate how climbers communicated
B．To show that climbers enjoyed many comforts
C．To show that modem telephones work at high altitudes
D．To emphasize how small some equipment had become

网考网参考答案：D
网考网解析：
Why does the speaker mention a hand-held telephone document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>