答案:15 B 16D 17A 18D 19B 20 A

15.第一段有這樣一句話needs to avoid being too adversarial，也就是說要保持客觀，公正，超然，所以選擇B。
16.從第二度最后一句話可以看出，Top management may well reject the idea initially because it is the safer option but they would not be there if they were not interested.應該選擇D。
17.第三段，Dr Cohen says that one of his strategies is to dress down so that the other side can relate to you. Pitch your look to suit your customer.所以選擇A。
18.You do not need to become their best friends but being too clever will alienate them. you should repeat back to them what they have said to show you take them seriously.所以選擇D。
19.從第四段的這句話可以看出，More common is a corporate culture clash between companies, which can put paid to any deal.選擇B。
20.最后一段講了孩子怎樣通過各種途徑達到自己追求的目標。所以選擇A。