1.单选题- (共7题)
①互为邻补角的两个角的角平分线互相垂直；②a,b,c是直线,若a⊥b,b⊥c，则a⊥c；
③过直线外一点P向直线m作垂线段,这条垂线段就是点P到直线的距离;
④过一点有且只有一条直线与已知直线平行；⑤两条直线被第三条直线所截,同位角相等.
| A．1个 | B．2个 | C．3个 | D．4个 |
2.选择题- (共1题)
根据短文内容，选择正确答案。
Do you know what punk rock music is? I love punk rock music so much. Now let me introduce punk rock music to you. Punk rock music started in the late 1960s in U.K. Punk rock music is a way to express the singer's thought and anger with society.
The earliest punk rock bands that formed in the early 1970s were Ramon's, Black Flag. Then in the late 1970s, more new punk rock bands were formed such as The Sex Pistols, The Clash, The Damned, Iggy Pop. Their songs were formed by some simple notes and their methods of singing were loud and they sang with anger.
Why did punk rock music develop that fast? Because the people in that time needed some ways to express themselves. There are lots of punk rock bands nowadays, such as Distillers, The Cure, Green Day. The biggest difference between the old and newer bands is their clothing. The old punk rock bands did not really focus on their clothing, but the newer punk rock bands do focus on their clothing when they are out for functions.
3.填空题- (共9题)
4.解答题- (共7题)
(1)这个村去年和今年种植油菜的面积各是多少公顷?
(2)去年和今年该村将所产的油全部制作成压榨菜籽油,然后以每千克15元的价格卖给批发商,批发商去年将菜籽油按照每千克a元定价,且全部售出。由于销售火爆,批发商今年每千克提高2元定价,也全部售出,且今年比去年多盈利69000元,求a的值。
（2）
A． 求证:∠B=∠C.(请把以下证明过程补充完整) 证明:∵∠1=∠2(已知) 又∵∠1=∠3( ) ∠2=∠ ( ) ∴AE∥FD( ) ∴∠A=∠ ( ) ∵∠A=∠D(已知) ∠D=∠BFD(等量代换) ∴ ∥CD(内错角相等,两直线平行) ∴∠B=∠C.( ) |
的解.
(1)求a的值；
(2)点P在运动过程中,请用t的式子表示△APC的面积；
(3)在点P运动的同时,有一动点Q从C点出发,沿折线C-D-A以1cm/s的速度向终点A运动,运动过程中,一个点停止运动时另一个点继续向终点运动,当△APC和△AQC的面积相差6平方厘米时,求t的值.
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【1】题量占比
单选题:(7道)
选择题:(1道)
填空题:(9道)
解答题:(7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：0
5星难题：0
6星难题：0
7星难题：0
8星难题：0
9星难题：23