单项选择题 听力原文：W: You looked rather worried. M: Yes , I was thinking about the Jone's case actually. It's a tough one.Why does the man look worried?A．Because Jone has a rough case.B．Because Jone's case is difficult to deal with.C．Because Jones has lost the case.D．Because Jone's is very tough.

单项选择题 水泥砂浆采用的水泥强度等级不宜（），水泥石灰混合砂浆采用的水泥强度等级不宜（）。

单项选择题 听力原文：M: Mrs. Murray, when'd you suggest we meet to discuss the new project further?W: I am not really sure. What do you suggest?M: Umm, shall we meet, say, at 9:30 on Friday?Why are they going to meet?A．To talk about a plan.B．To look into a problem.C．To discuss further.D．To talk about a new project.