【正文】
g B. to be C. having been D. is 7. ______ the widespread use of penicillin, many lives were saved during World War II. Which of the following is wrong? A. Thanks to B. Since C. As a result of D. Due to B B 他被認(rèn)為是電腦的發(fā)明者 /發(fā)明了第一臺(tái)電腦。 A piece of rock had fallen and blocked up the path. 一塊巖石掉了下來 ,堵住了路。 They were blocked from joining the club. 他們被阻加入該俱樂部。 The trees outside the window blocked off the sun. 窗外的樹木擋住了陽光。 There is a block in the pipe and the water can’t flow away. 管子里有阻塞物 ,水流不出去。 The store is three blocks away. 那家商店距此三條街。 3. It was not until World War II _______ two other scientists, Howard Florey and Ernst Chain, managed to use new chemical techniques to purify it. It was over a decade _______ someone else turned penicillin into the great drug of the 20th century. A. when B. that C. before D. since B C It was/ would be/ will be +段 +before…did/ do. It is/ has been+段 +since…did It is/was+時(shí)間狀語 +that+剩余句子 It was/ will be +時(shí)間 +when引導(dǎo)的定語從句 6. Some recipes remended ______ a tea ______ from the dried leaves of a particular plant _____ body pains. A. drinking。 made。 to reduce B. to drink。 made。 reducing C. drinking。 making。 to reduce D. to drink。 to make。 reducing 7. This is one of the first medicines in the world ever _______ as a standardized tablet. A. to sell B. sold C. to be sold D. being sold A C