下から5行目のit would～の文構造がわからないです。back upはどのような働きをしているのでしょうか。 教えて頂けるとありがたいです。

A Makeover for Hoover Dam Hydropower has attracted increasing attention in recent years as a renewable type of clean energy. As long as a suitable water source is available, hydropower facilities are usually good investments, producing energy in a manner that generates far less air pollution and CO2 emissions than fossil fuels do. The most common way to generate hydropower is to trap water at a high elevation behind a dam so it can be released and used to spin turbines below, which, in turn, power electricity-producing generators. However, hydropower has its drawbacks. Droughts and increased water consumption have reduced the flow of many rivers. As rivers become shallower, the necessary volume of water for electricity difficult to maintain, and power supply and generation is dependability are negatively impacted. more Variability in water levels has particularly affected Hoover Dam, a mega-scale hydropower facility in the US state of Nevada. Built in the 1930s at enormous expense to control the frequently flooding Colorado River and maintain a water supply for farmland irrigation, the dam's hydropower capabilities were seen as a way to recover some of the costs of its construction over the long term. The dam's electricity-generating capacity, however, was challenged from the start by seasonal variability in water flow, and in recent years has been greatly reduced by droughts. Combining hydropower with other alternative energy sources, though, may offer a solution. Solar and wind plants can produce enormous amounts of electricity, but one serious downside is that the energy they produce is not available when there is little sun or wind. While conventional batteries can help with this issue, storing such tremendous volumes of electricity has long been a challenge. A recently proposed system for Hoover Dam could provide an answer, though. The plan suggests building a new pumping station that would be powered by both wind and solar. It would push water from the river back up to Hoover Dam, refilling the lake behind it. The water could be released anytime to power the dam's generators in order to reliably meet demand for electricity. Kelly Sanders, an engineering professor at the University of Southern California, is enthusiastic about the storage plan, saying, "We by the p replace fo solat als are st ons to the What is 1 Inst inves 2 WE dams 3 A neg sys 1 en

CRPの基準値について。 CRPの基準値を調べると、0.00〜0.14mg/dlと0.30mg/dl以下のふたつが出てきます。どちらが正しいのでしょうか？ 0.30mg/dl以下⤵︎ ︎ https://www.hc.u-tokyo.ac.jp/checkupresult... 続きを読む

文法問題よろしくお願いします！ 1.Many studies into organic farming worldwide reject the claim that it is better for the environment than ( ) farming.... 続きを読む

高一の動名詞の問題です。教えて下さい。 できるだけベストアンサーにします。🙇

各文の( )内のうち,適当なほうを選びなさい. (1) I enjoyed (talking to talk) to you. (2) We didn't expect (meeting / to meet) Jim at the party. (3) She hasn't finished (reading to read) the book yet. (4) Ben refused (telling to tell) the truth. (5) I remember (hearing / to hear) this song before. (6) The little girl is trying (reaching to reach) the toy. (7) He has decided (studying to study) engineering at college. (8) Don't forget (turning / to turn) off the heater when you leave home.

上の本文を見て、（5）に答えてくれた人様は絶対にベストアンサーにします!!!本当に分からなすぎて泣きそうです😭😭😭😭😭お願いいたします!!!!!!わがままでごめんなさいm(_ _;)m。

Let's Peki 1-2 p.54-55 About 700 years ago, people started to make mechanical clocks. At first, they used weights to power these clocks, The clocks told the hour with bells. However, the weights were big and heavy.so (were/to/ difficult/elocks/move/these). About 500 years ago, people improved their clocks. They used springs to power the clocks. The springs were small and light. So people could move the clocks easily. Eventually. people began えなさい。 to carry watches. Today, we have clocks and watches everywhere. This is the result of many great inventions and many people's efforts. Even now, clocks and watches are improving. 約700年前から現在までの時計に使われたものとして, 本文で挙げられていないものをア~エから選び､ 記号で答えなさい。 ア ぜんまい イ おもり ウ つぼエベル (2) 下線部①の()内の語を正しく並べかえなさい。 So these clocks were difficult to move. (3) 下線部②の英文を日本文にしなさい。 (最後には、人々はうで時計を持ち運び始めました。 (4) 下線部(③3)は何の結果であると言っていますか。 日本語で書きなさい。 (多くの偉大な発明と多くの人の努力の結果 (5) 本文の内容について、 次の問いに3語以上の英語で答えなさい。 1. What kind of clocks did people start to make about 700 years ago? 2. About 500 years ago, was it difficult to move the clocks? 3. Are clocks and watches still improving? の結果

1枚目の内容を見て、お願いいたします!!!教えてくれた人様は絶対にベストアンサーにします!!!本当に分からなすぎて泣きそうです😭😭😭😭😭

教科 p.54-55 About 700 years ago, people started to make mechanical clocks. At first, they used weights to power these clocks. The clocks told the hour with bells. However, the weights were big and heavy, so (were/to/difficult/clocks/move / these ). About 500 years ago, people improved their clocks. They used springs to power the clocks. The springs were small and light. So people could move the clocks easily. Eventually, people to carry watches. began Today, we have clocks and watches everywhere. This is the result of many great inventions and

枠のところを教えてください!!!答え方が分からなすぎて泣きそうです😭😭😭😭😭教えてくれた人様は絶対にベストアンサーにしますので!!!!

L 時計を見ます。 現代では私たち しかしながら、 はるか昔, それはそれほ とてもおもしろい歴史があります。 しました。 約6,000年前, エジプト人は その影が彼らに時間を教えました。 AB (key.) 15 ¥6 54 5 About 700 years ago, people started to make メキぁニクる ウェイツ mechanical clocks. At first, they used weights to パウア power these clocks. The clocks told the hour with べるズ bells. Fowever, the weights were big end heavy, so these clocks were difficult to_move. STA 6 "About 500 years ago, people improved their clocks. They used springs to power the clocks. The ライト springs were small and Light. So people could move ビギン キョリ イヴェンチュアリ the clocks easily. Eventually, people began to carry watches. In-eading {74 words] 10 - (機械式の時計についての問題は何でしたか。) What was the problem with mechanical clocks? 16 To improve the clocks, what did people do? 時計を改良するために, 人々は何をしましたか。 約700年前, 人々は機械式の置き時計を作り始めました。 はじめは、これらの時 計に動力を供給するためにおもりを使いました。その時計はかねの音で時間を教えまし た。しかしながら、そのおもりは大きくて重かったため、これらの時計を動かすのは困 でした。 5 約500年前, 人々は時計を改良しました。 彼らは時計に動力を供給するためにぜ んまいを使いました。 そのぜんまいは小さく軽いものでした。そのため人々はその時 計を簡単に動かすことができました。 最後には, 人々は腕時計を持ち運び始めました。

品詞問題 点線部分には副詞が入るそうで、解説には述語動詞を修飾する副詞と書いてあったのですが、この英文で使われているworkは自動詞ではないのでしょうか。 私はveryの前にあるworkが自動詞で完結文であるから点線のところに副詞が入るのかと思いました。 述語動詞を修飾と... 続きを読む

戦問題: 基礎編 1. During the probationary period, all newly hired engineers of with their supervisors. Thunder Engineering work very --- (A) close (B) closely (C) closer (D) closest mengerie STERO y meeting was held at the hogy 0129

①のほうでin fields がないとバツですか？

from a different 解説4 「将来、医師や技師や薬剤師のような職業に従事する 若い人｣ 1 young people who are going to [want to / hope to / △ will] have [be engaged in] jobs in fields such as medicine, engineering, or pharmacy young people who are going to be doctors, engineers, or pharmacists [chemists 《イギリス英語》 ] がベストである。 like → ある名詞の具体例を列挙する場合には such as ~ ~は口語的すぎるという人が多い。 for example は、普通、 具体例を示す 文に対して用いられる。 →「~のような職業」を無視して 2 のように書いても十分である。 → 「将来」 は in (the) future だが、 未来形を用いれば不要。 been →「~に従事する」ことが確定しているなら will は不適切。

この文章の4行目にある、because they would harm whatever bacterial life forms might be present on the planet の文構造についてなのですが、might の前にあるはずの関係代名詞の主格whi... 続きを読む

次の文章を読んで、 問1~4に答えなさい。 The establishment of a colony on Mars has been a dream for decades. Inevitably some people have objected to the idea of colonizing Mars on both ideological and practical grounds. Some object to humans living on Mars because they would harm whatever bacterial life forms might be present on the planet. Others oppose Mars settlements because they disagree with the idea of using the Red Planet as a "backup" in case the Earth is destroyed. Those in favor of colonizing Mars, however, look to spread the human race beyond our single planet. The practical considerations of surviving long term on a world without a breathable atmosphere, no surface water, exposure to radiation, and extremes of heat and cold all have to be addressed first. Mars colonists could survive in domed cities, extracting and recycling resources from the Martian environment. However, a more interesting plan for the settlement of the Red Planet involves a process called terraforming, turning the dangerous environ- ment of Mars into something resembling Earth. Billions of years ago, Mars was more like Earth, with a thick atmosphere as well as oceans and rivers of surface water. The planet may well have had complex life forms. However, sometime in the distant past, Mars lost its (A ). When Mars found itself without the protection of that field, solar wind relentlessly stripped it of its atmosphere, quickly turning the planet into the frozen desert it currently is. While a number of schemes exist to restore Mars' atmosphere, creating a runaway greenhouse process that would raise its temperature, NASA and some academic researchers recently came up with a simple way to achieve the process naturally. The idea involves the creation of an electromagnetic shield between Mars and the Sun to protect the Red Planet from solar wind. Without the solar wind stripping it away, the atmosphere of Mars would gradually become thicker. Soon the temperature on the Martian surface would become high enough to release the trapped ( B ) at the poles, accelerating the (C). Water ice at the poles would melt, giving Mars back some measure of its oceans and rivers. All humans would have to do is introduce