问题
多项选择题
linux系统中，以下显示结果相同的是（）。
A、echo The current working path is $PWD.
B、echo "The current working path is $PWD." Echo hello
C、echo 'The current working path is $PWD.' Echo hello
D、echo "The current working path is `pwd`."
E、echo The current working path is $PWD. Echo hello
答案
参考答案：A, B, D, E
