课时作业4 Unit 4 Cyberspace
一、单元扣点
Ⅰ.单词拼写
1．He presented a new ________(概念) of the beginning of the universe.
答案 concept
2．He could not stand the terrible English ________(气候)．
答案 climate
3．This old man is a famous ________(原子能的) physicist.
答案 nuclear
4．The head office is in the ________(中心的) part of the city.
答案 central
5．The ________(平均的) age of the boys in this class is fifteen.
答案 average
