Ⅰ.单词拼写
1.I don't think there's enough information to make an ________ (假设). 
2.Output consists of both exports and sales on the ________ (国内的) market. 
3.In our school, most of our students a________ five “A” grades in their exams. 
4.The cost of building the railway was e________ at over one hundred thousand pounds. 
5.The rapid increase in population caused a ________ (缺乏) of natural resources.  
6.The first reason to ________ (应对) these problems is to save children's lives.  
7.One ________ (特点) I have observed over the years in all great software developers is their passion for their work.  
8.Joanna has finally made it to the first rank of ________ (名人) after 25 years as an actress.