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【单选题】
能够发生日全食和日环食的原因是什么?A.
月亮绕地球的轨道是椭圆
B.
月亮自转周期变化
C.
地球绕月旋转
D.
太阳风暴
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【简答题】School Uniforms This report is about the dress code in American schools. ( ) 1. What kind of clothing is commonly banned by American schools? a. All clothing except for uniforms. b. Flesh-colored...
【单选题】______ offensive were his words that his girlfriend left without saying goodbye.
A.
Very
B.
Too
C.
Quite
D.
So
【简答题】铅蓄电池是一种化学电源，它的正负极是分别浸在稀硫酸中的铜和二氧化铜，充电和放电时发生如下反应：Pb+PbO 2 +2H 2 SO 4 2PbSO 4 +2H 2 O。放电过___________能转变成___________能；充电过程则是将___________能转变成___________能。
【简答题】 1. A fire at a U.S. ammunitions depot in southern Baghdad last night 1 ordnance and set off ..... that rocked.. the Iraq .... for hours. 2. The United States military has 2 a new offensive in weste...
【单选题】Question 1.
A.
He looked inoffensive
B.
He was offensive
C.
He had no friends
D.
He was kind and generous
【简答题】A fire at a U.S. ammunitions depot in southern Baghdad last night .... ordnance and set off ... that rocked the Iraq 1 for hours. 2. The United States military has ... a new offensive in western Ira...
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