9.Cactus plants have spines that prevent animals from nibbling them.

　　A.ruining

　　B.reaching

　　C.climbing

　　D.gnawing

　　10.There are notices to the contrary，a great deal of technical writing is at best awkward and at worst actually unclear.

　　A.denials

　　B.laws

　　C.attempts

　　D.ideas

　　11.The students will be notified regarding the college entrance examination.

　　A.condoned

　　B.deformed

　　C.emulated

　　D.informed

　　12.Even before modern notions of friction，it was known that greased surfaces move over one another more easily than dry ones.

　　A.concepts

　　B.tricks

　　C.benefits

　　D.techniques

　　13.Because poultry is as nutritious as beef and lower in fat，many people are beginning to include more chicken in the diets.

　　A.delicious

　　B.filling

　　C.common

　　D.nourishing

　　14..One of the responsibilities of the Coast Guard is to make sure that all ships obediently follow traffic rules in busy harbors.

　　A.skillfully

　　B.safely

　　C.dutifully

　　D.currently

　　15.In the United States there are more people who are obese today than twenty years ago.

　　A.gainfully employed

　　B.upwardly mobile

　　C.excessively overweight

　　D.privately educated

　　參考答案：1C 2A 3A 4C 5D 6C 7C 8C 9D 10D 11D 12A 13D 14C 15C