在我们班上,当铃声响起,老师合上他的书时,那是一个每个人要站起来的信号。
【活学活用】
(1)The policeman ______________________ to move forward slowly.警察示意车辆缓慢前进。
(2)The thief ________________________________ the police were coming.
小偷用信号暗示同伴警察来了。(3)The Olympic________ remind us of where the Olympics are held and the characteristics of the host country.(2011·汉中调研)
A.symbols
B.signals
C.marks
D.signs2.arise 出现;发生
【归纳拓展】
arise from...起因于……;由……产生
While scientists are finding ways to make them smaller but even more powerful,problems can arise when these batteries are much larger and heavier than the devices themselves.(2010·山东,阅读理解D)
虽然科学家们正想办法让电池变得更小且功能更强大,但是当电池比设备本身还要大还要重时,可能会出现问题。
【活学活用】
(1)A great wind ________________ we were about to set off.我们正要动身时刮起了大风。
(2)Remember that accidents often ______________ carelessness.
记住意外事故常常起因于粗心大意。(3)用arise,rise,raise,arouse的适当形式填空
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