高考考试

【单选题】The last half of the nineteenth century ______ the steady improvement in the means of travel.
A、has witnessed
B、was witnessed
C、witnessed
D、is witnessed

网考网参考答案：C
网考网解析：
[解析] 主语the last half of the nineteenth century就暗示出了动词的时间状语，故用一般过去时。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>