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课后达标检测23 Unit 4 Public transport (建议用时：70分钟) Ⅰ.单项填空 1．(2017·浏阳一中模拟)As time goes by，the________ between the various classes of society are not so sharply marked as they used to be. A．divisions B．gaps C．separations D．intervals 2．(2017·长沙雅礼中学模拟)As we know，the purpose of communication is to________ your thoughts and ideas to others effectively. A．pass B．send C．convey D．show 3．The increasing number of cars on the road ________ traffic.That was the reason why they failed to get there on time. A．choked back B．choked down C．choked off D．choked up 4．(2017·江苏南京四校联考)—________ no ad during TV plays. —Great move！I cannot tolerate those annoying ads appearing every several minutes. A．There is said to have B．It is said to have C．There is said to be D．It is said to be 5．(2017·高考湖北卷)In much of the animal world，night is the time________for sleep—pure and simple. A．set aside B．set down | 
