flare

　　vt. 使闪耀;使张开;用发光信号发出;使外倾

　　One possibility is that the blast was like an ultra-powerful solar flare. 

　　一种可能的原因是这种爆炸很像有超级能量的太阳耀斑。

　　flaw

　　n. 瑕疵，缺点;一阵狂风;短暂的风暴;裂缝，裂纹

　　It was a large diamond, but it had a flaw.

　　这是颗大钻石, 但它有一点瑕疵。

　　fluctuate

　　vt. 使波动;使动摇

　　The latest data continue to show that suicide statistics in the Army frequently fluctuate.

　　最近的数据进一步表明，军队中的自杀统计结果经常波动。

　　fist

　　vt. 紧握;握成拳;用拳打

　　He nailed him on the chin with the fist.

　　他一拳击中了他的下巴。

　　1.The fire will __________up if you throw the petrol onto it.

　　2.We dressed up and went to the wedding__________ last Sunday.

　　3.A small group of houses clings to the eastern __________ of the mountain.

　　4. __________ language is inappropriate in this international forum.

　　5.The manic usually__________between great excitement and deep depression.

　　6.Bill's girlfriend hit him with her__________.

　　7.The Russian word for "book"is__________ .

　　8.The__________month will be busy because we need to publish five books.

　　9.Gems are usually cut to bring out their natural luster and to remove any __________ .

　　10.Tom broke his arm with a slight __________.

　　答案：1.flare 2.feast 3.flank 4.Foul 5.fluctuates 6.fist 7.feminine 8.forthcoming 9.flaws 10.fracture