7.I'mnot_______astotellhimthesecret.

A.sostupidB.suchstupidC.asstupidD.stupidso

8.ThephotosofMarstakenbysalliteare_______thanthosetakenfromtheearth.

A.clearestB.theclearestC.moreclearerD.muchclearer

9.Venusapproachestheearthmorecloselythan_______does.

A.anyplanelB.anyotherplanetC.anyplanetsD.anyothers

10.Theattornreytoldhisclient_______theyhadlittlechanceofwinningthecase.

A.whatB.unlessC.thatD.which

11._______relativelymoreexpensive，thiskindofengineishighlyefficient.

A.EvenB.AlthoughC.BecauseD.As

12.Themachine_______atfullspeedturnsout5000piecesanhour.

A.ranB.torunC.runD.running

13.Dr.BellwenttoNewYork，boughtsomebooks，and_______.

A.visitinghisdaughterB.tovisithisdaughterC.visitedhisdaughterD.visitshisdaughter

14.Filingthecorepondence，_______.

A.AndyfoundthelostdocumentB.andAndyfoundthelostdocument

C.thelostdocumentwasfoundD.andthelostdocumentwasfound