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英語 高校生

黄色でマーカーを引いた部分の訳が分かりません 1文だけでもいいので教えていただけませんか🙇‍♀️💭

The First Experience with the Bombing in Hiroshima Yamaguchi saw a bomber flying high in the sky of Hiroshima. Something small dropped from the plane, and two white things appeared. "Parachutes," he thought. Mata Suddenly there was a flash like lightning. Yamaguchi was so used to air attacks that he reacted in no time. He put his hands to his head and covered his eyes with his fingers and his ears with his two thumbs. At the same time, he dropped to the ground. Teht もち上げる A terrible explosion came. It lifted him about two feet from the ground and was followed by a shaking of the earth. He felt a strong wind pass between his body and the road. Yamaguchi did not know if he was dazed because of the first shock that had lifted him or because of the blow when he fell to the hard だげき ground. He was not sure how long he lay dazed in the road. When he opened his eyes, however, it was so dark all around him that he couldn't see a thing. It was like the middle of the night in the heat of the day. When his eyes became used to the darkness, he found that it was all black because he was in a cloud of thick dust. (207 words) QAnswer T (true) or F (false). 1. Yamaguchi saw a bomber drop something small. 2. Yamaguchi was not used to air attacks. 3. The explosion threw Yamaguchi into a river. 1 didn't know how long he lay there. (

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数学 高校生

数学1aの数と式の問題です。 黄色マーカーで引いたところがよく分かりません。 なぜそう言えるのでしょうか?

基礎問 42 第1章 数と式 23 命題の真偽 (1) 命題: x≧1 かつ y≧1 ならば, x+y≧2 について 逆・裏・対偶を述べ,その真偽を調べよ. (2)命題:キならばェキ1が正しいことを対偶を用いて 明せよ. (B)√2が無理数であることを背理法を用いて示せ。 精講 (1), (2) ある命題が正しいことを真 (true), 間違っていることを偽 (false) といいます. また, 次表のような関係にある命題を、 それ ぞれ,元の命題の逆裏 対偶といいます(→は 「ならば」を意 味します). → g 裏 p-q 対偶 解答 (1) 逆:x+y≧2 ならば, x≧1 かつ y≧1 x=2, y=0 のとき, 不成立だから偽 g→p 逆 (万はかの否定を表す) このとき, 対偶の関係にある2つの命題の真偽は一致します. (3) 「背理法」という証明の手段は, 次の手順ですすみます. Ⅰ. 結論を否定して議論を開始し ⅡI. その結果, 矛盾が生じる ⅢI.だから、結論を否定したものは誤りで、要求された事実は正しい 裏x<1または y<1 ならば, x+y<2 x=2,y=0 のとき, 不成立だから 偽 裏 9 p 偽であることを示す には不適当な例(= 反例)を1つあげれ ばよい <かつq または 対偶:x+y<2 ならば、 x<1まだは y<1 もとの命題が真だから, 対偶も真 (2)与えられた命題の対隅は 「z=1ならば よって、与えられた命題 「キならばキ1」は真. 注 対偶を用いて証明する場合は、たいてい 「キ」 「または」, 「ある ...... に対して」 という表現が含まれています。 (3) √2が有理数と仮定すると, これは真. '=x」で, ポイント m 2つの自然数m,n を用いて√2=1 と表せる. (ただし, m, nは互いに素) 両辺を平方すると2m²=n2 左辺は偶数だから,n² も偶数 すなわち, nも偶数. このとき,n24の倍数だから, 2m²も4の倍数. よって, m² は偶数となり, mも偶数. ゆえに、mとnは共通の約数2をもつことになり、 mとnが互いに素であることに矛盾する. よって,√2は有理数ではない. すなわち √2は無理数. 演習問題 23 43 まず、 結論の否定 最大のポイント 背理法では結論を否定して解答をかき始め、 その結果, 矛盾することを示す 第1章 (1) 命題: 0<x<1 ならばx" <1 について 逆, , 対偶を述べ、その真偽を調べよ. (2) 命題: xy≠2 ならば r≠1 またはy=2 が正しいことを対偶 を用いて証明せよ。 (3)√2が無理数であることを用いて,√2+1 も無理数であるこ とを背理法で証明せよ.

解決済み 回答数: 1
英語 高校生

mainstreamⅢ chapter18 章末問題 解答教えてください!

6 Chapter 18 Comprehension a. On the basis of Gurdon's research, Yamanaka revealed that specialized cells from a mature Choose the appropriate answer. body can be transformed into iPS cells. frog. b. Gurdon placed cells from the skin of mice into an unfertilized egg cell of a c. Yamanaka took cells from the blood of mice and transformed them into a baby. d. The only difference between Gurdon's and Yamanaka's experiments was what cells they used. e. Organ rejection will no longer be a problem because it has become possible to develop organs from the patients' own cells. f. iPS cells will soon make it possible to cure all types of diseases. g. Yamanaka admits that iPS technology has done harm in some cases. h. Even as a scientist Professor Yamanaka believed that his mother saw his father's ghost. i. Professor Yamanaka has never thought of giving up research. found iPS ce j. What Professor Yamanaka wanted to say in the speech was what seems unfortunate at first may turn out to be fortunate in the end. not e mes B Choose the most appropriate main theme. a. John Gurdon and Shinya Yamanaka won the Nobel Prize because they helped each other for 40 years to create iPS cells. Chapter 18 | Minis SO 15 b. We should be careful about new technology because it takes time to put it into use and it can do harm. 24 c. Professor Yamanaka has experienced challenges in his life but they were also opportunities, one of which led to the Nobel Prize.

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英語 高校生

分かる方宜しくお願いします。

4 Reading Read the following passage and answer the questions. India has one of the oldest and largest film industries in the world. Graph 1 shows that, when it comes to the number of films made a year, India comes first, producing easily more films than the U.S. This has put the Indian city *Mumbai in the center of the global film industry. 2000 LESSON [Graph 1] Film Production (2015) 1500 5 One of the most common features of Indian films is that they have a lot of singing and dancing scenes. Songs often comment on the action taking place in the film. A song may be part of the *plot, so a character has a reason to sing. It may express a character's thoughts, or an event in the film, such as two characters falling in love. Some say that the reason for so much singing and dancing is because India is a 1o *multi-lingual country. Many different languages are spoken in India. As shown in Graph 2, by far the most common is *Hindi, which is used by nearly half of the population. Hindi is followed by *Bengali, *Telugu and many others. However, most people can enjoy the singing and dancing scenes, even if they don't understand the language spoken in the film. quifi 15 Among the Indian films, there are films in Hindi, Bengali, *Tamil, and so on. The ones in Hindi are called "*Bollywood" films (named after “Hollywood”) and are gaining huge popularity in and outside of the country. Its films are watched throughout Southern Asia and across many areas in the world, reaching over 90 countries. Indian cinema has become a global power. LENGLASU 1000 500 時制 0 France Britain the States China Japan India Napq?! 2-4 * 1642 Hindi Marathi /100 [Graph 2] Speakers of Languages in India (2011) 20 * Mumbai: AVR plot (話) 筋 multi-lingual: 多言語の Bengali : ベンガル語 Telugu: テルグ語 Tamil : タミル語 Bollywood : ボリウッド ※本書では,アメリカ発音, イギリス発音, オーストラリア発音の音声を扱っています。 ファッ Reading の CDトラック番号の横にそれぞれを米・英・豪で示しています。 40 Bengali Telugu Tamil Others Hindi : ヒンディー語 (256 words)

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