【正文】 medicine can keep you free from pain. 這種藥可以止痛。 [歸納拓展 ] making it ready for crops...是現(xiàn)在分詞短語作結(jié)果狀語，表示由前面的事情引起的一種自然的結(jié)果。 (3)We hurried to the station only to be told that the train had left. 我們急匆匆趕到車站，結(jié)果被告知火車已開走了。 (2)He did not ment on what I said. 他對(duì)我的話未作評(píng)論。根據(jù)文章第一段中的 “ ...it was difficult for her to climb stairs， she was soon out of breath.” 下文中的 “ She knew that...it would take time.” 及文章最后一句可以推出醫(yī)生讓她減肥，故選 B。根據(jù)短文可知她的體重嚴(yán)重超重，所以醫(yī)生建議她減肥，故選 C。 4． more than B． as many as C． as much as D． as large as 答案 D 解析 指人口數(shù)目多用 large，少用 small。 7． B． reduce C． increase D． continue 答案 C 解析 臨近幾句是講糧食增長問題，故選 increase“增長 ”。句意為：在南亞、非洲和中東國家預(yù)計(jì)增產(chǎn)幅度不大。 14． B． plants C． forests D． people 答案 C 解析 由“ more and more trees are cut down.”可推知，此處指森林 (forests)可能消失。 17． B． working out C． answering D． dealing 答案 A 解析 settle the problems 意為“解決問題”。 20． B． suggesting C． spending D． waiting 答案 D 解析 句意為：專家們警告說等待太長的時(shí)間作出決定將會(huì)極大地減少成功的機(jī)會(huì)。句意為：現(xiàn)在還有時(shí)間給世界各國制定行動(dòng)計(jì)劃。 16． B． develops C． exists D． appears 答案 C 解析 exist 意為“存在”。 12． B． lost C． discovered D． used 答案 B 解析 由于擴(kuò)建城市，修建房屋，必然侵占大量農(nóng)田，故選 lost(失去 )。 9． B． hardly C． partly D． never 答案 A 解析 already 意為“已經(jīng)”，由下句可知，是指已經(jīng)有足夠糧食供人們生活的國家。 5． B． developed C． big D． mountainous 答案 A 解析 從現(xiàn)狀來看，人口增長快的國家多為發(fā)展不發(fā)達(dá)的國家；而城市人口急劇增長的則是一些發(fā)展中國家 (developing countries)。 2． B． pleasant C． safe D． blue 答案 B 解析 與后面的人口增長、環(huán)境污染等聯(lián)系起來看，在 2021 年地球上的狀況 (picture)將會(huì)令人不愉快 (pleasant)。根據(jù)文章最后一句 “‘ I just wanted to see what 10 pounds of meat looked like.’” 知，她只是想看看十斤肉到底 有多大，故選 D。根據(jù)文章第一句 “ Ellen Parker was worried about her health.” 可知她有健康問題所以去看醫(yī)生，故選 C。 [歸納拓展 ] ment n．評(píng)論；議論； vi.amp。 [語境助記 ] (1)His parents died early， leaving him an orphan. 他的父母早亡，他成了孤兒。 (3)These exercises help free the body of tension. 這些鍛煉可以使緊張的身體放松。 (3)The skirt was reduced to ￡ 10 in the sale. 在大減價(jià)期間，這條裙子減價(jià)到 10 英鎊。 (2)We must gradually reduce the wage gap. 我們必須逐步縮小工資差距。 [歸納拓展 ] focus on 集中 (注意力、精力等 )于 focus n．焦點(diǎn)；中心點(diǎn)； ；聚焦 focus one’ s attention/mind on 集中注意力 /心思于 [語境助記 ] (1)The discussion focused on three main problems. 討論集中在三個(gè)主要問題上。 [歸納拓展 ] turn to 轉(zhuǎn)向；求助于；翻到 (書的某頁 ) turn down 拒絕；調(diào)小 turn in 上交 turn on/off 打開 /關(guān)上 turn out 證明是，結(jié)果是 turn over 翻轉(zhuǎn)，翻身 turn up 出現(xiàn)，到場(chǎng)，露面；開大 [語境助記 ] (1)He often turns to the police when in trouble. 有困難時(shí)他經(jīng)常向警察求助。 [題組訓(xùn)練 ] (1)用所給詞的適當(dāng)形式填空 ① I now regret leaving (leave) school so young. ② I regret to inform (inform) you that your contract will not be renewed. (2)They failed to pass the exam last regretted not being able to help (沒能幫助 ) them. 2． Many of these chemicals can lead to cancer or other 他疾病。 Period Two Integrating Skills Ⅰ .單詞 1． ；制造 production 細(xì)菌 bacteria 營養(yǎng)；滋養(yǎng) nutrition 礦物；礦石 mineral 發(fā)現(xiàn)；發(fā)覺 discovery 根；根源 root 總結(jié)；摘要 summary 2． ；使為難 confuse 遺憾；惋惜 regret 減少；減縮 reduce 瀏覽；略讀 skim 畫底線標(biāo)出；強(qiáng)調(diào) underline 表達(dá)意見；作出評(píng)論 ment 3． chemical Ⅱ .短語 1．逐漸增強(qiáng)；建立；開發(fā) build up 2．導(dǎo)致；造成 (后果 )lead to 3．集中 (注意力、精力等 )于 focus on 4．使 ?? 免受 (影響、傷害等 )；使 ?? 不含 (有害物 )keep...free from/of 5．給 ?? 造成損害 cause damage to 6．此外，另外 in addition 7．轉(zhuǎn)向；向 ?? 求助 turn to Crops such as peas or soybeans put important minerals back into the soil， making it ready for crops such as wheat or corn that need rich and fertile soil. 像豌