第二节：单词拼写（共10小题；每小题0.5分，满分5分）（注意单词的正确形式）

81. One snowy night, all the streets were_____________(空无一人)

82. I’ve tried but I can’t h _________the problem by myself.

83.He’s alive as his heart is still b___________..

84. The weather in this country d_________（不同于）from place to place.

85. The two words “vocation” and “vacation” often c___________（使困惑）me.

86. How is the word “mutton”____________________(发音)

87. The new factory is expected to c___________ more chances for people to be employed.

88.It’s a pity that numbers of people lack the sense of protecting the r ____of the Great Wall.

89.It’s good to be back in ______ (文明)after living in a tent in the remote area for two weeks.

90.New York is a big c_________ city..

T68镗床主轴电动机只有低速挡，没有高速挡时，常见的故障原因有时间继电器KT不动作或行程开关SQ2安装的位置移动造成的SQ2处于（）的状态。

A、始终接通

B、始终断开

C、不能切换

D、中间位置