【正文】 推出醫(yī)生讓她減肥，故選 B。 (3)We hurried to the station only to be told that the train had left. 我們急匆匆趕到車站，結果被告知火車已開走了。 [歸納拓展 ] keep...free from/of 使 ?? 免受 (影響、傷害等 )；使 ?? 不含 (有害物 ) free from 不含 (有害物等的 )；不受 ?? 傷害 (或影響等的 ) for free/free of charge 免費 free sb./oneself/sth. of/from ，去除 [語境助記 ] (1)This medicine can keep you free from pain. 這種藥可以止痛。 [題組訓練 ] (1)All her energies are focused on (集中于 ?? ) her children. (2)Her beauty makes her the focus of attention(關注的焦點 )． (3)介詞填空 Public attention at the moment is focused on the problem of environment balance. 5． A healthy soil reduces disease and helps crops grow strong and healthy. 健康的土壤會減少病蟲害并且?guī)椭r(nóng)作物茁壯成長。 (2)The discovery of new evidence led to the thief being 。 1． regret ；惋惜； ；懊悔 [歸納拓展 ] regret doing＝ regret having done 后悔做了某事 regret to do regret to say/tell/inform...遺憾地說 /告訴 /通知 ?? to one’ s regret 令某人感到遺憾的是 with regret 遺憾地 [語境助記 ] (1)Tom regretted telling his parents the thing. 湯姆后悔告訴了父母那件事。 (2)Their talk turned to the change that had taken place in the city. 他們的話題轉到城市發(fā)生的變化上。 (3)The shopkeeper reduced the price by 10. 店主把價格降了 10 美元。 [題組訓練 ] (1)We should keep ourselves free from drugs (使自己不受毒品的傷害 )． (2)We’ ve managed to keep the garden free from weeds (使花園免受雜草的傷害 ) this year. (3)Free from (從 ?? 擺脫出來 ) endless homework on weekends， the students now find their own activities， such as taking a ride together to watch the sunrise. 7． 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. 像豌豆或大豆這樣的農(nóng)作物將重要的礦物質(zhì)帶回土壤，從而使之適宜于種植要求土壤肥沃的農(nóng)作物，比如小麥或玉米。；作出評論 ment on/upon 對 ?? 進行評論 make ments/no ment on...對 …… 進行評論 /不進行評論 no ment 無可奉告 [語境助記 ] (1)The scandal caused a lot of ment. 這件丑聞遭到很多議論。 4． Mrs Ellen Parker’ s real problem was that . A． she ate too much steak B． she couldn’ t walk quickly C． she weighed too much D． she couldn’ t climb stairs 答案 C 解析 推理判斷題。 6． B． each C． all D． neither 答案 B 解析 前面提到了兩個城市，故此空只能填 each； neither 具有否定意義，不合句意，也不能插入謂語之中。 13． pollution B． Water pollution C． Some diseases D． All farmland 答案 A 解析 由 burn more coal and oil必然排放大量煙霧，可推知：此處指空氣污染 (air pollution)。 19． B． in C． out D． for 答案 C 解析 work out a plan 意為“制定計劃”。由上下文可知，環(huán)境正遭受污染和破壞，專家們只是保存現(xiàn)在的狀況。 10． B． lacked C． found D． expected 答案 D 解析 expect 意為“預計”。 3． B． beautiful C． crowded D． terrible 答案 C 解析 因為人口繼續(xù)增長，所以世界會越來越擁擠 (crowded)。 2． After the doctor examined Mrs Ellen Parker， he advised her to . A． eat more meat B． lose weight C． e and see him again D． look after her heart 答案 B 解析 推理判斷題。 (2)The firefighter cut off the wire， preventing a big fire. 這名消防隊員剪斷了電線，阻止了一場大火的發(fā)生。 6． This also keeps the air， soil， water and crops free from chemicals. 這還可以讓空氣、土壤、水以及農(nóng)作物不受化學物質(zhì)的污染。 (2)Please focus your attention on what he is saying. 請把注意力集中在他說的話上。 [歸納拓展 ] (1)lead to 引起，導致 lead lead do lead to sb./sb.’ s doing (某人 )某事 lead a． ..life 過著 ?? 的生活 (2)to 為介詞的短語還有 be used to 習慣于 be devoted to 致力于，忠誠于 admit to 承認 get down to 著手做 look forward to 盼望 [語境助記 ] (1)In given conditions， a bad thing can lead to good ，一件壞事可以產(chǎn)生好的結果。 (2)I regretted to tell you you hadn’ t passed the driving test. 我很遺憾地告訴你你沒