（A） because they are composed of tissues such as tooth and bone
（B） because they are composed of tissues like tooth and bone that are
（C） because they are composed of tissues， like tooth and bone， tissues
（D） in that their composition， tissues such as tooth and bone， is
（E） in that they are composed of tissues such as tooth and bone， tissues
13. Proponents of artificial intelligence say they will be able to make computers that can understand English and other human languages， recognize objects， and reason as an expert does——computers that will be used to diagnose equipment breakdowns， deciding whether to authorize a loan， or other purposes such as these.
（A） as an expert does——computers that will be used to diagnose equipment breakdowns， deciding whether to authorize a loan， or other purposes such as these.
（B） as an expert does， which may be used for purposes such as diagnosing equipment breakdowns or deciding whether to authorize a loan.
（C） like an expert——computers that will be used for such purposes as diagnosing equipment breakdowns or deciding whether to authorize loan.
（D） like an expert， the use of which would be for purposes like the diagnosis of equipment breakdowns or the decision whether or not a loan should be authorized.
（E） like an expert， to be used to diagnose equipment breakdowns， deciding whether to authorize a loan or not， or the like.
14. Oberlin College in Ohio was a renegade institution at its 1833 found for deciding to accept both men and women as students.
（A） at its 1833 found for deciding to accept
（B） for the decision at its 1833 founding to accept
（C） when it was founded in 1833 for its decision to accept
（D） in deciding at its founding in 1833 to accept
（E） by deciding at its founding in 1833 on the acceptance of
15. During the 1980's approximately $50 billion in private investment capital is estimated to have left Mexico and added to the strain on the country's dept-ridden economy.
（A） During the 1980's approximately $50 billion in private investment capital is estimated to have left Mexico and added to
（B） During the 1980's it is estimated that approximately $50 billion in private investment capital left Mexico and added
（C） It is estimated that there was approximately $50 billion in private investment capital that left Mexico during the 1980's and added
（D） It is estimated that during the 1980's approximately $50 billion in private investment capital left Mexico， adding
（E） Approximately $50 billion in private investment capital is estimated as having left Mexico during the 1980's adding
答案：4.C 5.C 6.D 7.B 8.C 9.E 10.B 11.B 12.E 13.C 14.D 15.D
