7.spontaneous a. 自发的,自然产生的
例句9.Obviously, the Chairman’s remarks at the conference were ______ and not planned.
A. substantial B. spontaneous C. simultaneous D. synthetic
8.Spot n. 地点,场所 ; n. 点,斑点,污点
v. 认出,认清 see, look at, notice; v. 玷污,弄脏
v. 用点做记号
9.stability n. 稳定性
stable1; a. 稳定的,安定的;stable2 n. 马厩,马棚
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