答案在下一頁One Good Reason to Let Smallpox LiveIt's now a fair bet that we will never see the total extinction of the smallpox virus.The idea was to cap t...2015-09-29
用法辨析：(1)“Why not+動詞原形+…?”(干嘛不……?)是簡略句，完全形式是：Why don't you +動詞原形+…?如：Why not go and have a look?(干嘛不去看看?)/Why not try it once again?(為什么不再試試?)(2) seem...2015-09-29
Are You Just Not Ill or Excellent in Health?As we have seen, the focus of medical care in our society has been shifting from curing disease to prevent...2015-09-29
come/go into effect生效，實施catch one eye引人注目make a face做鬼臉catch fire著火make friends交朋友，友好相處make fun of取笑，嘲弄lose heart喪失勇氣，失去信心get hold of抓住，掌握throw/cast l...2015-09-29
Better Control of TB Seen If a Faster Cure Is FoundThe World Health Organization1 estimates that about one-third of all people are infected with bacte...2015-09-29
The Effects of Global Warming on WeatherThere are hidden factors which scientists call "feedback mechanisms”。 No one knows quite how they will interac...2015-09-29
Lead PollutionLead deposits, which accumulated in soil and snow during the 1960’s and 70’s, were primarily the result of leaded gasoline emissions ori...2015-09-29
go before居前have to/have got t0不得不，必須help oneself自取所需(食物)keep out of躲開，置身…之外get out of逃避，改掉have get有give oneself up自首，投降，投案go along with陪同前往，隨行g0 in fo...2015-09-29
once upon a time從前no wonder難怪，怪不得decline with thanks婉言謝絕account for說明(原因等)allow for考慮到arrive at達成，得出ask for請求，要求begin with從開始break off斷絕，結束break up中止，...2015-09-29
動詞不定式可以在句子中用作狀語，有下列幾種情況：[A] 放在不及物動詞(come,go,stop,finish,wait等詞)的后面。如：He came to see her yesterday.(他昨天來看望她)(表示來的目的)/ I stopped to have a rest.(我停下來休息一...2015-09-29
名詞或代詞作主語時和謂語之間的單復數的一致問題：1.謂語和謂語基本保持單復數的一致,即：主語是可數名詞單數或不可數名詞時,謂語動詞用單數形式：如：The computer was a great invention.(計算機是個了不起的發明)The water in the glass is ver...2015-09-29
Benefits of Educating GirlThe benefits of educating girls are numerous — to individual girls both when they are young and when they become adult women...2015-09-29
Eiffel Is an EyefulSome 300 meters up,near the Eiffel Tower's wind-whipped summit the world comes to scribble.Japanese,Brazilians.Americans-they graf...2015-09-29
Britain’s Solo SailorEllen MacArthur started sailing when she was eight，going out on sailing trips with her aunt.She loved it so much that she saved h...2015-09-29
代詞(一)代詞的分類：英語中代詞分為：人稱代詞、物主代詞、反身代詞、指示代詞、關系代詞、疑問代詞、連接代詞和不定代詞等等。(二)人稱代詞：人稱代詞代替人和事物的名稱,分為主格和賓格兩種形式。1.主格用來作句子的主語、表語。如： I often go shopping on Sundays.(星期天我...2015-09-29
