【判断题】A:As a private railway company, there is a certain lack of investment in safety. Is this the cause of the recent railway accidents?B:Although the safety investment is below standard, I would like to s...
【简答题】Directions: 1.Read the conversation and fill in the blanks with the information below 2. Listen to the tape and check your answer. here’s your key is that correct enjoy your stay may I help you we hav...