16.The early railroads were........the existing arteries of transportation: roads, turnpikes, canals, and other waterways. [b]A.those short lines connected [b]B.short lines that connected [b]C.connected by short lines [b]D.short connecting lines [b]答对率：50% [b]答案：b [b][b][b]17.During the flood of 1927,the Red Cross,......out of emergency headquarters in Mississippi, set up temporary shelters for the homeless. [b]A.operates [b]B.is operating [b]C.has operated [b]D.operating [b]答对率：44% [b]答案：d [b][b]18.Minoru Yamasaki is an American architect [which] works [departed from] the austerity [frequently] associated [with] architecture in the United States after the Second World War. [b]答对率：37% [b]答案：a [b][b]19.Jane Addams. social worker, author, and [spokeswoman] for the peace and women's suffrage [movements],[she received] the Nobel Peace Prize in 1931 for her [humanitarian] achievements. [b]答对率：50% [b]答案：c [b][b]20.Bromyrite crystals [have] a diamond-like luster and are usually [colorless],but they [dard] to brown when [exposed] to light. [b]答对率：44% [b]答案：c [b][b]21.Ice is less [denser] [than] the liquid [from which] [it] is formed. [b]答对率：50% [b]答案：a [b][b]22.James Baldwin's plays and short stories,[which are] to [some degree] autobiographical, established [them] as a [leading] figure in the United States civil rights movement. [b]答对率：43% [b]答案：c [b][b]23.Thunder can be [listened] from a [maximum] distance of about ten miles [except] under [unusual] atmospheric conditions. [b]答对率：35% [b]答案：a [b][b]24.The quantum theory states.....,such as light, is given off and absorbed in tiny definite units called quanta or photons. [b]A.energy that [b]B.that it is energy [b]C.it is energy [b]D.that energy [b]答对率：50% [b]答案：d [b][b]25.Geysers are round near rivers and lakes, where water drains through the soil......... [b]A.surface below the deep [b]B.deep below the surface [b]C.the deep below surface [b]D.the deep surface below [b]答对率：50% [b]答案：b [b][b]26.Although [he is] employed in the scientific and [technical] fields, the metric [system] is not generally [utilized] in the United States. [b]答对率：46% [b]答案：a [b][b]27.[Beneath] the deep oceans that [cover] two-thirds of the Earth, intriguing [secret] of the planet are [concealed]. [b]答对率：43% [b]答案：c [b][b]28.The pioneer John Chapman [received] the nickname "Johnny Appleseed" because he [planted] apple seedlings during [him travels] in [what] are now Ohio, Indiana, and Illinois. [b]答对率：50% [b]答案：c [b][b]29.On March 1,1867,......to the Union when President Andrew Johnson's veto was overridden. [b]A.since the state of Nebraska had been admitted [b]B.admitted that the state of Nebraska [b]C.the admission of the state of Nebraska [b]D.the state of Nebraska was admitted [b]答对率：50% [b]答案：d [b][b]30.The best known of all the Arctic birds,........ [b]A.birdwatchers favor ptarmigans [b]B.being ptarmigans' and birdwatchers' favorites [b]C.favored by both ptarmigans and birdwatchers [b]D.ptarmigans are a favorite of birdwatchers [b]答对率：47% [b]答案：d [b][b]通过对这30道错误率极高的toefl语法题分析可看出，名词词组与动名词、词的顺序、动词单复数---主谓一致 、动词短语及用法 、形容词修饰等知识点较多，容易忽视或混淆的地方。熟悉难题，透过它们找到命题的难点，方能有的放矢，攻取满分！