1.选择题- (共17题)
A.SO2+2NaOH=Na2SO3+H2O
B.CuSO4+2NaOH=Cu(OH)2↓+Na2SO4
C.2NaOH+H2SO4=Na2SO4+2H2O
D.{#blank#}2{#/blank#}
A.SO2+2NaOH=Na2SO3+H2O
B.CuSO4+2NaOH=Cu(OH)2↓+Na2SO4
C.2NaOH+H2SO4=Na2SO4+2H2O
D.{#blank#}2{#/blank#}
A.认识物质俗名 | B.注意实验安全 |
①固体二氧化碳——干冰 ②氢氧化钙——熟石灰 ③氢氧化钠——纯碱 | ①点燃可燃性气体前一定要验纯 ②鉴别化学药品时可以品尝 ③危险实验佩戴防护眼镜 |
C.合理利用资源 | D.健康生活方式 |
①随意大量使用塑料袋 ②过量使用农药、化肥提高农业产量 ③钢铁表面刷上油漆,防止钢铁生锈 | ①平衡膳食,不偏食、挑食 ②不购买食用过期食品 ③不过量饮用碳酸饮料 |
A.认识物质俗名 | B.注意实验安全 |
①固体二氧化碳——干冰 ②氢氧化钙——熟石灰 ③氢氧化钠——纯碱 | ①点燃可燃性气体前一定要验纯 ②鉴别化学药品时可以品尝 ③危险实验佩戴防护眼镜 |
C.合理利用资源 | D.健康生活方式 |
①随意大量使用塑料袋 ②过量使用农药、化肥提高农业产量 ③钢铁表面刷上油漆,防止钢铁生锈 | ①平衡膳食,不偏食、挑食 ②不购买食用过期食品 ③不过量饮用碳酸饮料 |
angry, writer, happen, copy, show, different, war, describe |
Have you read the book called Uncle Tom's Cabin? It's said that it is one of the greatest books in America.The book {#blank#}1{#/blank#}an unpleasant social problem—slavery(奴隶制)in the Southern States of America. It first came out in 1852.Over 300,000{#blank#}2{#/blank#}were sold out in a year.People had {#blank#}3{#/blank#}ideas about the book.In the North, more and more people began to{#blank#}4{#/blank#}theft support(支持)for the freedom(自由)for the black people after they read the book, but in the South, many people were very{#blank#}5{#/blank#}at the people in the North. In 1861, the war between the two parts of the country{#blank#}6{#/blank#}. Uncle Tom's Cabin surely played a part in the {#blank#}7{#/blank#}. In 1862, Abraham Lincoln met Harriet Beecher Stowe, the book's {#blank#}8{#/blank#}. As he took her hand. Lincoln said, "So this is the little lady who started this big war."
2.单选题- (共7题)

A.b2>4ac | B.ac>0 | C.a–b+c>0 | D.4a+2b+c<0 |


A.S1=S2B.2S1=S2C.3S1=S2D.4S1=S2


A.2个 | B.3个 | C.4个 | D.5个 |
3.填空题- (共8题)

4.解答题- (共4题)
| A | B |
进价(元/件) | 1200 | 1000 |
售价(元/件) | 1380 | 1200 |
(注:获利=售价-进价)
(1) 该商场购进A、B两种商品各多少件?
(2) 商场第二次以原进价购进A、B两种商品.购进B种商品的件数不变,而购进A种商品的件数是第一次的2倍,A种商品按原价出售,而B种商品打折销售.若两种商品销售完毕,要使第二次经营活动获利不少于81600元,B种商品最低售价为每件多少元?
(1)A、C两村间的距离为 km,a= ;
(2)求出图中点P的坐标,并解释该点坐标所表示的实际意义;
(3)乙在行驶过程中,何时距甲10km?

(1)求直线AB的解析式;
(2)设△PEQ的面积为S,求S与t时间的函数关系,并指出自变量t的取值范围;
(3)在动点P、Q运动的过程中,点H是矩形AOBC内(包括边界)一点,且以B、Q、E、H为顶点的四边形是菱形,直接写出t值和与其对应的点H的坐标.

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【1】题量占比
选择题:(17道)
单选题:(7道)
填空题:(8道)
解答题:(4道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:1
5星难题:0
6星难题:3
7星难题:0
8星难题:5
9星难题:9