希望英语好的好心人给出参考答案,

希望英语好的好心人给出参考答案,
Having no language,infants cannot be told what they need to learn.Yet by the age of three they will have mastered the basic structure of their native language and will be well ___1___ their way to communicative competence.Acquiring their language is a most ___2_____ intellectual feat.Studies of ____3_____ children learn language generally agree that the most remarkable aspect of this feat is the rapid acquisition of grammar.Nevertheless,the ability of children to conform ____4____ grammatical rules is only ____5_____ more wonderful than their ability to learn words.It has been estimated that the ____6_____ high school graduate in the United States has a reading vocabulary of 80,000 words,which includes ____7_____expressions and _____8______ names of people and places.This vocabulary must have been learned over a period of 16 years.From the figures,it can be calculated that the average child learns ____9____ a rate of about 13 new words per day.Clearly a learning process of great complexity goes on at a rapid ____10_____ in children.
1.A.inx05x05x05x05B.onx05x05x05C.underx05x05x05x05D.for
2.A.impressivex05x05B.expressivex05C.repressivex05x05x05D.persuasive
3.A.wherex05x05x05B.whenx05x05x05C.whichx05x05x05D.how
4.A.tox05x05x05x05B.forx05x05x05C.withx05x05x05x05D.in
5.A.greatlyx05x05x05B.slightlyx05x05C.a lotx05x05x05x05D.a great deal
6.A.commonx05x05x05B.ordinaryx05x05C.averagex05x05x05D.usual
7.A.idiomaticx05x05x05B.idiomx05x05C.idiomsx05x05x05D.idiot
8.A.properx05x05x05B.appropriatex05C.suitablex05x05x05D.improper
9.A.inx05x05x05x05B.onx05x05x05C.atx05x05x05x05D.for
10.A.timex05x05x05x05B.ratex05x05x05C.placex05x05x05x05D.way