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理科 中学生

答えはqを1.4加えるです。 考え方を教えてください。

②酸やアルカリの性質、中和について調べる実験を行いました。 問1~ 問6に答えなさい。 うすい塩酸(P液とする) とうすい水酸化ナトリウム水溶液 (Q液とする) を用意して次の実験1 実験2を行った。 実験1 (1) 食塩水 (塩化ナトリウム水溶液)でしめらせた ろとpH試験紙を図1のようにスライドガラ スに置き 両端を金属製のクリップでとめて電 源装置につないだ。 電源装置 (2) P誰をしみこませた糸を pH試験紙の中央に 置き 電圧を加えてpH試験紙の色の変化を観 察した。 [ろ紙 pH試験紙 (3)(2)の液をQ液に変えて(1)から同様の操作を スライド ガラス 糸 行った。 図 1 実験2 (1) P液を10cmずつ入れた試験管A~E を用意し、これらの試験管にこまごめビペットでQ液 試験管には2cm 試験管B には4cm 試験管Cには6cm 試験管Dには8cm²試験 管Eには10cm というように量を変えて入れ、よく混ぜた。 (2) 試験管A~B それぞれにマグネシウム 0.30gを加えたところ、試験管ADでは気体が発生 したが、試験管E では気体が発生しなかった。 (3) 試験管A~Dで気体が発生しなくなった後、 マグネシウムが残っている試験管からマグネシウ ムを取り出し、その質量を測定した。 下の表は、試験管A~E に入れたP液, Q液それぞれの 体積と残ったマグネシウムの質量をまとめたものである。 なお、 試験管A のマグネシウムはすべ て溶けてなくなっていた。 A B C D E P液の体積〔cm²)] 10 10 10 10 10 Q液の体積[cm] 2 4 6 8 10 残ったマグネシウムの質量[g] 0.00 0.06 0.16 0.26 0.30 -10-

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英語 中学生

いの答えと考え方を教えてください。

5 10 15 20 25 30 The Olympics were held in Tokyo in 1964. A few years ago before the Olympics, Japan had a big problem. It was a problem of communication. Many foreign people didn't visit Japan, and we had only, Japanese signs. For example, words like "i" or "" were on toilet doors. These signs were not understood by many foreign people. Japanese people at that time needed to make signs in many different languages for foreign people. But when they put many words on one sign, the "letters became too small. They could not easily read the sign. They had to think of ) signs for foreign people. Mr. Masaru Katsumi, a leader of a design team for the Olympics, had a great idea. everyone /to/ was easy / thought / understand he forit pictures. He wanted to make picture signs. These signs are called *pictograms and are used in many places now. Picture 1 Picture 2 Picture 3 Look at these pictures. Picture 1 shows a shower. Picture 2, shows a toilet. Picture 3 shows a restaurant. Foreign people can easily understand what each picture shows. They had to make pictograms which everyone could understand without any trouble. When they started to make them, one of the pictograms was a shower. Many Japanese people didn't know about showers at that time and didn't have one at home. One of the designers didn't even know the word "shower." One officer had to explain how to use it with a photo of a shower. The designer made the pictograms through the officer's words. With a lot of trouble and hard work, twelve designers needed three months and made pictograms for the Olympics. When the last pictogram was finished, Mr. Katsumi said to all the designers, "You did a great job, but this work is not for us. We did it for all Japanese people. Please write your names on this paper." The paper said that they'd like to give up the *copyright to the pictograms. They wrote their names on the paper. They gave up the copyright. One of the designers said, "Mr. Katsumi hopes that many people in many places will use the pictograms in the future. Money from the copyright is not important to Mr. Katsumi. He is proud that he is one of the members who worked for the Tokyo Olympics." In 2020, we are going to have the Olympics in Tokyo. Our life will change a lot. What kinds of new signs or pictograms will we see around us? (E) letter pictogram ピクトグラム(絵文字) designer www. デザイナー officer 役人 copyright 著作権

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英語 中学生

3.4枚目が問題文、5枚目が答え、1.2枚目は問題を解くときに必要な文です。 なぜこの答えになるのかがわからないので教えてください。 解くのは大変だと思うので、一問だけでも大丈夫です。

2 次は, 高校1年生の Yusuke が書いた英文です。 これを読んで、 問1~間6に答えなさい。*印 のついている語句には、本文のあとに 〔注〕があります。(34点) My father loves *dinosaurs and *fossils. He (he/them/in/collects/is/that/interested /so) dinosaur toys, small fossils and books about dinosaurs. I heard he tried to find fossils along the river with my grandparents when he was young. When I was younger, my family took me to the science museum every year. My father loved looking at the dinosaur fossils there, and he always explained them to me. So, I got interested in dinosaurs and fossils, too. My father has a restaurant near our house, and he displays some dinosaur teeth fossils in the restaurant. One day, he introduced one of his customers to me. The man, Mr. Shirai, also loved dinosaurs and fossils, and often visited museums all around the world, such as in America, Canada and China. He realized that my father was interested in the same things because of the fossils in the restaurant. They became good friends. One day in September, Mr. Shirai came to my father's restaurant and showed me a fossil. It was a beautiful fish fossil in a brown stone plate. I was surprised to see it, Mr. Shirai A me a lot about the fossil. He traveled to Germany to look for fossils, and he found many fossils there such as fish, animal bones and leaves. The area is very famous for "archaeopteryx fossils. I once saw a picture of the archaeopteryx fossil in a book, so I wanted to go to see the fossil in -4-

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英語 中学生

(1)の答えがD、(3)の答えがウ、(6)の答えがイ なんですけど、なんでそれになるかと、5⃣で3~5程の段落で分けるとしたらどこになるのか、またその段落はそれぞれどんな題名になるのかを教えて欲しいですm(_ _)m

学院) E J 5 次の英文を読んで、あとの問いに答えなさい。 < 星野改〉 High schools in Minnesota have a problem Many students are late to school. They are often tired. Some students fall asleep in class. They often get sick, too. The local governments take that as a problem. They make a small change.) It helps a school day a little later/ A lot! What do they do? They start the D- This small change makes a big difference. Why? Most teens are very tired early in the morning. They usually don't go to bed until after midnight In the morning, they wake up between 6:00 and 6:30 for school. So they don't get enough sleep! They are still tired early in the morning. But after the change/ teens are more awake and later start time is better for a teen's body clock I be ready/class/to/in). A be in ready class Everyone has a body clock. An adult's body clock works like this: most adults get tired between 9:00 and 11:00 at night. They usually go to bed before midnight. Adults can get up early in the morning. It's not a problem. But a teen's body clock is different. Teens don't get tired at midnight. They usually stay up later. But early in the morning, they need more sleep. B FO C The schools in Minnesota pay attention to the teen's body clock. They change the start of the school day from 7:20 a.m. to 8:40 a.m., 80 minutes later. Other schools in the United States change their start times too. Some schools change the time by only 30 minutes, but they still get good results. ( 2 ), the results are amazing! ③(Many) students are on time. Morning classes are easier to teach. Students are getting ①(good) grades. Students have fewer illnesses, so they are ⑤(little) absent. In Minnesota, there is another important effect: fewer students drop out of school or change schools. D Today, more and more high schools are starting later. Most schools can't start two hours later. But they can change the start time a little. A small change can make a very big difference! Just ask the students. Minnesota ミネソタ (アメリカ合衆国中央北部の州) (1) 次の英文を入れるのに最も適する位置を, 本文中のA~Dから1つ選びなさい。 Now the students are happier, and also the parents and teachers too. D(A) (2)下線部①の ( )内の語を並べかえて正しい英文を作るとき, 3番目にくるものをア~エから1つ選びなさい。 ア be イ ready ウ class I to (3) 20)( )に適するものを, ア~エから1つ選びなさい。 7 On the other hand (4) 3~50)( 1 However ウ In fact I Even so )内の語をそれぞれ比較級にかえなさい。 (3) much (5)本文の内容にあうものを,ア~エから1つ選びなさい。 more (T!) better ⑤⑤ fewer Less High school students in Minnesota are always taking classes seriously. Most teens usually go to bed as early as possible. Most adults don't stay up late because of their body clocks. I Some schools changed the school time but their students did not have good grades. 本文のタイトルとして最も適するものを,ア~エから1つ選びなさい。 7 Fewer Illnesses 1 Late Start Body Clock I Good Sleep イ (土)

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英語 中学生

(1)の答えがchoosing、(2)の答えがウ、(5)の答えがアで、それぞれなんでその答えになるのかと、 5⃣の本文を上から4行、4行、5行、4行、3行、2行で分けた時それぞれに題名を付けるとしたらどうなりますか? 教えて欲しいですm(_ _)m

5 次の英文を読んで, あとの問いに答えなさい。 <川越東改> Origami is the Japanese art of folding paper. To do origami, the artist starts with a square piece of paper. Some people like to use special origami paper that is two colors. The front of the paper is one color, and the back of the paper is another color. Other people like to use origami paper that has patterns on it. After ①(choose) your paper, you can find many instructions for folding the paper into different things. Many people enjoy (make) origami flowers, animals, or things ( 3 ). For all of these things, there are a few kinds of folds that you need to use. For example, sometimes you need to fold the paper in half. Sometimes, the paper must be folded from corner to corner. If you follow the directions carefully, you can create a beautiful paper flower or animal. However, origami is more than folding paper. First, origami is an important part of Japanese life. For example, nature is important in Japan. In Japan, people care about the seasons, weather, water, or other things in nature. Origami is also a part of nature. That is why the most popular origami shapes are things like animals. Birds, fish, flowers, and stars are all popular shapes. It is a quiet activity, and can calm the mind and body. People who do origami like the activity as much as the art. They like it because origami demands a lot of attention. When people think hard about creating something, they forget about their problems. This allows them ④ to calm down. ⑤ Origami is also good for teaching children. They also learn to work carefully. Also, origami has squares and triangles. These shapes are important in all kinds of learning. Origami helps children to learn about these shapes. Maybe you can try to do origami yourself. You only need some paper and a book of instructions. You can find instructions for many origami shapes on the Internet. instruction direction (1)①,②の( )内の語を適する形にかえなさい。 (2) 30( に適するものを, ア~エから1つ選びなさい。 (3) (4) 7 to paint with 1 to talk with 1 (2) making. to play with I to help with (イ) ④に適するものを,ア~エから1つ選びなさい。 Origami is also easy to learn. 1 Origami is also good for your imagination. Origami is also difficult to learn. I Origami is also good for your mind. ⑤にはA~Cの文が入ります。 自然な流れの文章になる配列を, ア~エから1つ選びなさい。 A Children must follow these steps exactly. B First, origami has many steps. C This way, children can learn to follow instructions. ア A-B-C イ A-C-B B-A-C I B-C-A (5)本文の内容にあうものを, ア~エから1つ選びなさい。 If you follow some instructions for paper folds, you can enjoy many different origami shapes. Learning origami gives us a good chance to help animals on the earth. You may feel tired if you try hard to do origami carefully. I The most important thing for children's education is origami. (土)

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数学 中学生

一次関数の入試問題です。 教えてください

49 下の図で、四角形ABCDと四角形 EFGHは合同 な台形であり, 4点B, C, H, Eはこの順に直線 l 上にある。 四角形 EFGHを固定し, 四角形ABCD を 矢印の方向に毎秒2cmの速さで動かす。 点Cが点H と重なってからx秒後の2つの台形が重なった部分の 面積をycmとする。 これについて,PさんとQさんが下記のように会話 した。 あとの問いに答えなさい。 〔豊川〕 (3)会話文中のエ~カにあてはまる数を答えなさ い。 (4) 会話文中のキーケにあてはまる数を答えなさ い。 5cm/ .7cm- D G 4 cm B C 10cm H [E Pさん: 重なる部分の形はの値によって変化す るね。 Qさん: 例えば,r=4のとき, 重なる部分の形 はアになるね。 Pさん: 次は重なる部分の面積について考えてみ よう。 例えば, x=2のときのyの値はど うなるかな。 Qさん:まず,どのような形になるかを考えてか ら面積を求めるとよさそうだね。 Pさん: わかった! x=2のとき,y=イウと なったよ。 Qさん:今度は, 重なる部分の面積からェの値を 求めてみるのはどうかな。 Pさん:いいね。やってみよう。 Qさん: では,y=20になるときのxの値を求め てみて! Pさん: y=20となるときは2回あって, x= とカだったよ。 I オ Qさん: よくわかったね。 最後に, y をxの式で 表してみようよ。 Pさん:いいよ。 点Dが点Fと重なってから点A が点Fと重なるまでについて,yをェの 式で表すと, y=-キ x+クケとなっ たよ。

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数学 中学生

多角形の場合どのように変化していくのかを数字で表すことが難しくてわかりません 教えてください

49 下の図で、四角形ABCDと四角形 EFGHは合同 な台形であり, 4点B, C, H, Eはこの順に直線 l 上にある。 四角形 EFGHを固定し, 四角形ABCD を 矢印の方向に毎秒2cmの速さで動かす。 点Cが点H と重なってからx秒後の2つの台形が重なった部分の 面積をycmとする。 これについて,PさんとQさんが下記のように会話 した。 あとの問いに答えなさい。 〔豊川〕 (3)会話文中のエ~カにあてはまる数を答えなさ い。 (4) 会話文中のキーケにあてはまる数を答えなさ い。 5cm/ .7cm- D G 4 cm B C 10cm H [E Pさん: 重なる部分の形はの値によって変化す るね。 Qさん: 例えば,r=4のとき, 重なる部分の形 はアになるね。 Pさん: 次は重なる部分の面積について考えてみ よう。 例えば, x=2のときのyの値はど うなるかな。 Qさん:まず,どのような形になるかを考えてか ら面積を求めるとよさそうだね。 Pさん: わかった! x=2のとき,y=イウと なったよ。 Qさん:今度は, 重なる部分の面積からェの値を 求めてみるのはどうかな。 Pさん:いいね。やってみよう。 Qさん: では,y=20になるときのxの値を求め てみて! Pさん: y=20となるときは2回あって, x= とカだったよ。 I オ Qさん: よくわかったね。 最後に, y をxの式で 表してみようよ。 Pさん:いいよ。 点Dが点Fと重なってから点A が点Fと重なるまでについて,yをェの 式で表すと, y=-キ x+クケとなっ たよ。

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