初中免费试题库，先看题再决定怎么练

Don\’t ________ us, Miss Yang． We can help each other． We are good friends．（ ）

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A:Good morning,sir.Welcome to Suning Appliances Mall. What can I do for you? B:（1）______. A:A Smartphone?Oh,we have many different types of smartphones.You can have a look first. B:This one looks cool.Can it be used for

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I love to visit my grandma\’s farm.I visit it every week （周） .I\’m happy to go there . I love to work （工作）on Grandma\’s farm.I can see the cats and the dogs.I can feed （喂）animals and pick up （捡起）eggs. I love the dogs and

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That cold January night,I was growing sick of my life in San Francisco.There I was walking home at 1 am in the morning after a tiring practice at the theatre.With opening night only a week away,I was still learning my li

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在"探究串联电路电压的特点"活动中: $(1)$按照如图甲所示的电路图,将如图乙的实物电路连接完整；实验中应选择规格______$(选填"相同"或"不同")$的小灯泡. $(2)$在测$L_{1}$两端电压时,闭合开关,发现电压表示数为零,原因可能是______$(写出一种即可)$. $(3)$小明保持电压表的$B$连接点不动,只断开$A$连接点,并改接到$C$连接点上,测量$L_{2}$两端电压.他能否测出$L_{2}$两端电压$?$

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如图所示的电路中,闭合开关$S$,两只电压表的指针偏转角度相同,电压表$V_{1}$测量的是灯______的电压；则灯$L_{1}$和$L_{2}$两端的电压之比$U_{1}$:$U_{2}$为______.

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请根据图甲所示的电路图连接实物图.（电流表均选小量程）

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读出下列各仪表的示数:电阻箱示数为______$\Omega $；电压表示数为______$V$；电流表示数为______$A$.

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电压表的表盘及指针如图所示,若接"$0\sim 3V$"量程,电压表的读数为______$V.$若接"$0\sim 15V$"量程,表盘上每一小格代表______$V$,读数为______$V$.

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计算: $(1)\sqrt{(-3)^{2}}+\sqrt[3]{27}-\sqrt{9}$. $(2)\left(\pi -3.14\right)^{0}+|1-\sqrt{2}|-\sqrt[3]{-64}$.

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若\(\sin α>\cos α\)，则锐角\(α\)的取值范围是\((\quad)\)

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下列不等式成立的是\((\quad)\)

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大西高铁侯马西站站房扩建工程是展示侯马市形象的重要窗口,$9$月$20$日改扩建全部完成.如图,这是旅客出入站的自动扶梯示意图,自动扶梯$AB$的长为$20m$,倾斜角为$30^{\circ}$,则自动扶梯的垂直高度$BC$的长为______$m.$

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如图,一架无人机在空中$A$处测得某校旗杆顶部$B$的仰角为$30^{\circ}$,底部$C$的俯角为$60^{\circ}$,无人机与旗杆的水平距离$AD$为$6$米,求该校的旗杆高为多少米.(结果保留根号）

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已知:如图,$AB=52m$,$\angle DAB=43^{\circ}$,$\angle CAB=40^{\circ}$,求大楼上的避雷针$CD$的长.(精确到$0.01m)$

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Yuan Ke works as a food deliveryman（外卖员） in Changsha,Hunan Province.He is a little different from most other food deliverymen.When busy lunchtime comes,Yuan doesn\’t pick up paid orders.Instead,he goes to a community can

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Name Age Looks Clothes Favorite Food Du Li 13 black hair a small nose big eyes a pink dress white shoes fish Sandy 12 a round face big eyes a small mouth a red skirt a green shirt hamburgers David 13 brown hair a big nos

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Using a dictionary ①It is very important for us to use a dictionary when we study English. ②When we read some news or passages in English,we often meet some new words.We can look them up in the dictionary so that we can

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Unlike kids in the city,kids in some rural villages （乡村） find it hard to get books to read. Li Kaixuan,the founder （创立者） of HAVE Library,wants to help those kids.He is working to build village libraries.With his hard wor

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How can you get to know your neighbors（邻居）?Here are some ways for you. Going outside is an easy way.Sit in front of the door every day,and finally someone will say hello to you.If you feel bored just sitting there,you ca

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