高中英语语法--数词 你们好,麻烦帮我解答以下问题.1,____________ tells us the main i

高中英语语法--数词
你们好,麻烦帮我解答以下问题.
1,____________ tells us the main idea of this book and every chapter's key point.
A.The first chapter B.The one chapter C.First chapter D.The Chapter One.
2.___________ is the day when the French people found their own liberation.
A.14,JULY 1789 B.The 14th of JULY,1789 C.The JULY 7,1789 D.The 14th of JULY,in 1789
3.Mary said,"Mr.Smith,can I ask you _________ question?"
A.second B.a second C.secondly D.second
4.The old man served in the army in ____________,when he was in __________.
A.1950's .his twenties B.1950's .twenties
C.the 1950's .his twenties D.the 1950's ...the twenties.
139.On the average,_____________people in the city has got a mobile phone.
A.one out of ten B.One ten
C.one of the ten D.the one of ten.
140.We stayed in Nanjing just for a short time,only ________,to be exact.
A.two and a half days.B.two and a half day.
C.two days and half D.half a day and two.
你们最好在答题时附上选题原因/解释，这样可以更好的学习。