11.In the United States [among] 60 percent [of the space] on the pages of newspapers [is reserved] for [advertising].
答对率：47%
答案：a
12.Scientists believe that by [altering] the genetic composition of plants it is possible to develop specimens that are [resisting] to [disease] and
have [increased] food value.
答对率：50%
答案：b
13.The American anarchist Emma goldman infused her spirited lectures, [publishes],and demonstration [with a] passionate [belief] in the freedom
of [the] individual.
答对率：36%
答案：a
14.[Being] the biggest expanse of brackish water [in the] world,the Baltic Sea [is of] special [interesting] to scientists.
答对率：44%
答案：d
15.While studying the [chemistry] [of human body],Dr.Rosalyn Yalow won a Nobel Prize for the research she [conducted on] the [role of] hormones.
答对率：37%
答案：b
16.The early railroads were........the existing arteries of transportation: roads,turnpikes,
canals,and other waterways.
A.those short lines connected
B.short lines that connected
C.connected by short lines
D.short connecting lines
答对率：50%
答案：b
17.During the flood of 1927,the Red Cross,......out of emergency headquarters in Mississippi,set up temporary shelters for the homeless.
A.operates
B.is operating
C.has operated
D.operating
答对率：44%
答案：d
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.
答对率：37%
答案：a
19.Jane Addams.social worker,authoe,and [spokeswoman] for the peace and women's suffrage [movements],[she received] the Nobel Peace Prize in 1931 for her [humanitarian] achievements.
答对率：50%
答案：c
20.Bromyrite crystals [have] a diamond-like luster and are usually [colorless],but they [dard] to brown when [exposed] to light.
答对率：44%
答案：c