155.
M: Where's Joan? She said she would be here at 3, but now it's 3:30. She must have missed the train.
W: I think so. I hope she doesn't miss the next one, otherwise she'll be late for the opening address at the conference.
答案解析：
正確答案為B。根據(jù)she'll be late for the opening address她可能會(huì)錯(cuò)過開幕陳詞。可知，女子擔(dān)心瓊錯(cuò)過開幕演講，因此B項(xiàng)正確。

156.
M: This has been the worst flood in the past 20 years. It has caused much damage and destruction.
W: Look at the prices of fruits and vegetables. No wonder they are so expensive.
答案解析：
正確答案為C。根據(jù)女子說It has caused much damage and destruction.洪水造成了巨大損失和破壞。以及男子說Look at the prices of fruits and vegetables. No wonder they are so expensive.看看水果和蔬菜的價(jià)格，怪不得那么貴呢。可知，二人在談?wù)摵樗畮淼挠绊懀虼薈項(xiàng)正確。