For example, in the code above we used -d "for the command line option defining a name-value pair."
比方说，在上面的代码中我们用“- D”这一命令行选项来定义名-值对。
2
For each of them there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
每题都有对应标记的A、B、C和D四个选项，请选择最佳选项并在答题卡2的相应字母中间划横线。
3
First, let's remove the 'd' — we're using the same delete line command that we've used previously.