being_studied→studying

　　4．He was so lucky that he escaped hurting.

　　hurting→being_hurt

　　5．Using by me now the bike can't be lent to you.

　　Using→Being_used

　　Ⅴ.语法填空

　　Although many high school dropouts leave school permanently some dropouts later reenter school. __1__(approximate) 10 percent of the sophomores __2__ dropped out between 1980 and 1982 returned to school by __3__ fall of 1982. Generally high school reentrants differ __4__ typical dropouts in several school and student characteristics. Background attributes and test score performance __5__(associate) with low dropout rates tend to be related to higher－than－average reentry rates. For example reentry rates among 1980 sophomore dropouts were about one－fifth __6__(high) in the Northeast and North Central regions than in the South or West. Among whites reentry rates in the West were one－third lower than in other regions. __7__ blacks reentry rates in the Northeast(14 percent) __8__(be) substantially higher than those in the South (6 percent). Hispanic dropouts in the North Central region were three times __9__ likely to return to school as those in the Northeast or West. Hispanics in the South were twice as likely to reenter as __10__ in the Northwest or West.

　　答案：1.Approximately　2.who/that　3.the　4.from　5.associated　6.higher　7.Among　8.were　9.as　10.those

　　Ⅵ.阅读理解

　　From furniture to jewelry from the medical industry to civil engineering three－dimensional printing can turn all sorts of ideas into objects.

　　 "I wanted to print large objects such as buildings，" said Behrokh Khoshnevis professor of the University of Southern California. He planned to construct a house in 24 hours by applying 3D printing techniques but he admitted there would be difficulties in meeting his goal.

　　 "For example if you run out of ink while printing on paper you will throw that paper away. But you cannot throw half－completed buildings away if your material gets stuck." he said. Although the printed house is not available to visit there is a chance for people in Shanghai to see items printed in 3D.

　　 The Belgium－based company Materialise NV is currently holding a 3D printing exhibition in Shanghai that started in late 2012 and will continue until the middle of this year. The company is eager to show Asia what is possible with 3D printing.

　　 "All the pieces shown here are what cannot be made through traditional techniques. A good example of this customization is hearing aids. More than 10 million people already use 3D printed hearing aids all made according to the size of their ear，" said Wim Michiels executive vice－president at Materialise NV.

　　 "You can produce anything whenever and wherever you like. You don't need to set up production lines for pieces that only need a limited amount of product. Setting up a production line is a lot of work takes a long time and is very expensive for a limited number of pieces." said Michiels.

Kim Francois managing director of Materialise China said their European and American clients have already made the next step toward additive manufacturing