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English Senior High

タイトルのところをよろしくお願いします

Dand about 4% have been extinct since 1950. Le Complete the summary. There are some unnecessary words. Lie an/ Summary Title )are dying out faster than in tho past. 1()Many linguists think that (1. ( )Almost 40% of languages are (2. One of the reasons why languages disappear is that people who speak th。 languages 2 Ld ) phenomena. die because of (3. ) cause the extinction of languages. ( ) Another reason is that (4. Today some people (5. away their own language because of technology 5 and the desire for material wealth. If a language dies, we believe that we lose the knowledge that the society has (6. 6 ) over time and diversity in the world. In language (7. へ the language and culture as possible. ), linguists try to record as much information about ird0 Sto In language (8. the language. ),a linguistic community takes an active role in saving 8 Efforts by learners, the elders, the government and linguists (9. to save languages from disappearing. ) us 9 Titles Words O 10 allow / approaches culture / eliminate endangered / gained languages / natural O Language Preservation O How Languages Rapidly Disappear © Loss of Speakers Causes Languages to Disappear O People Choose English over Their Language O Language Revitalization O People's Efforts Can Save Languages @ The Current Situation of the Languages の Humans Cause Languages to Disappear t iw d people / preservation revitalization/ throw O What Is Lost When Languages Disappear 1guage Extinction

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English Senior High

問題の文章と問題文です 答えをお願いします

TOEFL Reading REVIEW eismins to Banufaig Natural Resources Yabezaug to sabi nism arti ei BAN eyso teoM neobrile 1 to evso ent, ( Natural resources are useful things that occur naturally in the environment. Some examples a are petroleum, water, and trees. Humans depend be careful to use them wisely. on natural resources in many ways, so we must brow ent Resources can be divided into two categories: renewable and non-renewable. The difference is that renewable resources recover naturally over time. Renewable resources are usually living things like animals or plants. For example, trees are a renewable resource because they can be grown again after we cut them down. But oil is a non-renewable resource because it takes millions of years to form again. We must try to conserve non-renewable resources because once they are used up, we cannot get more. Natural resources can be traded between countries. They can create a lot of wealth for resource-rich countries. For example, Saudi Arabia, Iran, and Kuwait in the Middle East have large amounts of petroleum. They export it to other countries and make a lot of money. ssl 10 ayaw inshoami ni olqueq siroteirting en A arbelbeforq alaihe erit @ 'eviso ant qu baisvos adoOR O eves ortt birt aloon eeuse 0 ni molte notni Jedno nisam chi apnang VOLUME vert befotong ant extoon nettet no obiani op bludo sho no bhoo boop ni perle. petroleum enew donitisq eviso eni to YOGI oil found under the surface of the earth or under the sea daiq Q BACK 05 Sentence Simplificat

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English Senior High

この問題の答えを教えてください

GU amibling Glaciers Glaciers are very large sheets of snow and ice that pile up on land for long periods of time. They are the second largest source of water on Earth after the oceans. There are two main types of glaciers. The first is alpine glaciers, which are found in the mountains. The other is continental glaciers, which cover continents. Glaciers move over time. They slowly flow downhill. Some glaciers are getting bigger, but others are shrinking. Even though they are made of snow and ice, glaciers are very powerful. They change mountain valleys from a "V" shape to a "U" shape by pushing great amounts of rock and cap. earth. When a glacier forms on top of a mountain, it is called an ice A narrow strip of ice on a beach in the Arctic is called an ice foot. 1 Which of the sentences below best expresses the essential information 2014- in the first highlighted sentence in the passage? (A) Glaciers are large and long-lasting piles of snow and ice that form on land. (B) Glaciers are very big areas of snow and ice that never move. (C) Glaciers are the biggest accumulations of snow and ice on Earth. (D) Glaciers are large sheets of snow and ice, so they can be a water source. 2 Which of the sentences below best expresses the essential information in the second highlighted sentence in the passage? (A) Glaciers move downhill and change into mountain valleys. (B) The power of glaciers changes the shape of mountain valleys. (C) The large amounts of rock in glaciers change mountain valleys. (D) Glaciers are more powerful than mountain valleys. Juulanu ans siautoim What are the two main types of glaciers? mis doww, 216ioniM

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Mathematics Senior High

どっちもY=にして、方程式を作るのは出来ないんですか?

x=α が解 → &=e を代入して方程式が成り立つ 2つの2次方程式 2x?+kx+4=0, x?+x+k=0 がただ1つの共通の実数 解をもつように, 定数kの値を定め,その共通解を求めよ。 合 0 O0 SOLUTION |基本75 CHART 方程式の解 2つの方程式の共通解を 202+ka+4=0, α^+α+k=0 が成り立つ。 これを α. kについての連立方程式 とみて解く。実数解という条件に注意。 x=α とすると, それぞれの式に x=αを代入した 解答 共通解を x=α とすると 2a°+ka+4=0 0-②×2 から (k-2)α+4-2k=0 すなわち よって のえに ] k=2 のとき 2つの方程式は,ともに x+x+2=0 となる。 その判別式をDとすると 3章 Q+a+k=0 x=α を代入した① と 2の連立方程式を解く。 *の項を消す。 (R-2)α-2(k-2)=0 (R-2)(α-2)=0 k=2 または α=2 0-(ト-)(E+x) *共通の実数解が存在する ための必要条件であるか ら,逆を調べ十分条件で あることを確かめる。 D=1°-4-1-2=-7 =ax+bx+c=0 の判別 式は D=b°-4ac D<0 であり, 実数解をもたないから, k=2 は適さない。 2] α=2 のとき のから このとき2つの方程式は 日2x°-6x+4=0 となり,O'の解は x=1, 2 よって,確かにただ1つの共通解 x=D2 をもつ。 1, [2] から 22+2+k=0 ゆえに k=-6 2 2の解はx=2, -3 x2+x-6=0. * 2(x-1)(x-2)=0, (x-2)(x+3)=0 k=-6, 共通解は x=2 INFORMATION この例題の場合, 連立方程式①, ② を解くために,次数を下げる方針で α の項を消 去したが,この方針がいつも最も有効とは限らない。 トのPRACTICE 79 の場合は, 定数項を消去する方針の方が有効である。 世通留をとま

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