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English Senior High

赤下線の英文のbeing associated~はなぜ分詞構文になるのか分かりそうな方よろしくお願いします。

> 構文·語句解説 h 第1段落 IConsiderable attention has been paid to the size or relative size of the human brain. The first point of interest is that the ratio of brain weight to body is at a maXimum at birth and decreases with age, reaching a fairly steady level by maturity. 3In other wOras, newborn babies have very large brains, relatively speaking, weighing some 300 grans. *This is roughly the size of the brain of an adult male chimpanzee. 5Children and their brains continue to grow for many years, gradually increasing their ability to learn and remember. There have been suggestions that the growth of the brains of children is not steady, but occurs suddenly, each period of rapid growth being associated with a particularly important developmental or intellectual stage. 7These stages could be the ability to reason abstraculy, to taik, or cven to do aritnmetic. SThe idea of sudden brain growth is still around, but has not attracted much enthusiasm. 1人間の脳の大きさ,あるいは相対的な大きさがかなり注目されてきた。 2興味深い第1の点 は,身体に対する脳の重量の比率が出生時に最も大きく, 年齢とともに減少し, 成熟するまで にほぼ一定の水準に到達するということである。言い換えれば,新生児は, およそ300グラム

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Mathematics Senior High

数A、図形の性質です。 (2)の解答の下から4行目がどうしてこういうことになるのか横の説明書きを読んでもいまいち腑に落ちません。 わかりやすく説明してくださると有難いです!!

考え方(1) △AMB と △AMCのそれぞれに, 三角形の角の二等分線の性質を用いると, MA 例題 283 た,ZAMB, ZAMC の二等分線が辺 AB, AC と交 三角形の性質 右の図の△ABC において. AMを中線とする.ま D E わる点をそれぞれ D, Eとする. (1) DE/BC であることを示せ。 B M C (2) DE<BD+CE であることを示せ。 か共通,MB=MC であることから,平行線の性質との関連が見えてくる。 2)二角形の2辺の長さの和は,他の辺の長さよりも大きいことを利用する。 1) MD, ME はそれぞれ,ZAMB, ZAMC の二等分線であるから, MA:MB=AD: BD. MA:MC=AE:CE 解答 MB=MC AM は△ABCの中線であるから, よって,AD:BD=AE:CE より, 5 「 A DE/BC (2) 右の図のように, 線分 AM上で, BM=CM=PM と なるように点Pをとる。 ABDM とAPDM において, 2組の辺とその間の D E 角が,それぞれ等しいので, ABDM=APDM DAD=9DAAS あり GABS%3DDA B M C …0 ZDBM= ZDPM ACEM と APEM において同様に考えて, …3 ZECM=ZEPM よって, BD=PD ..21AS-9DAS ACEM=APEM よって、 CE=PE 13 ZDPM+ZEPM=ZDBM+ ZECM 2, ④より, =ZABC+ZACB A8 =180°-ZBAC<180°の よって, 3点D, P, Eは同一直線上にない。 したがって,APDE は存在し,三角形の成立条 件より, 0, 3, 6より, 3点が同一直線上にある とき,DE=BD+CE と なるので,そうならない ことを示しておく. DE<PD+PE DE<BD+CE Focus A8 PQ/BC → AP:AB=AQ: AC=PQ: BC GA →AP: PB=AQ: QC aA 三角形の2辺の長さの和は, 他の辺の長さよりも 大きい CD A Q 練習

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English Senior High

2にはdisinterested、3にはfalseが入ります。 この文章の最後のThe ideaからの1文が、意味も、falseが入る理由もわかりません。 よろしくお願いします🙏

Play and art are alike in that both activities appear superficially at any rate>to lack the compulsion associated with biological necessity. We seem not to have to play in order to survivé; nor are we obviously compelled to paint pictures, compose music, or sculpt statues. Although one can imagine that a man might be forced by S. another to create sómething, it is generally true that art is a voluntary activity, and that creativity_flourishes best (in the absence of compulsion. The same is true óf play. \For, although one might compel a child to play a game\against his will, the game will straightaway lose one of the characteristics)that makes(it play. If it is accepted that both play and art are essentiarty voluntary, it follows that both are generally( 2 )activites. | Although games. can be turned into ways of makinga living by those who are particularly skilful players, (hey do not originate in this way. Although creative productionv may turn out to be financially rewarding, men do not primarily engage in it for the sake of financial gain. Both games and werks,of art stand somewhat outside the ordinary course of life, and 'do not appear to be associated with the immediate satisfaction of wants and appetites. The idea that a novelist, for example, could sit down and write a popular romance for cash with her tongue in her cheek is almost certainly( 3 ).

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