陕西省2015高考英语人教版一轮课时作业及解析：必修5 Unit 1
课时作业(二十一) 必修5 Unit 1 Great scientists[
Ⅰ.单词拼写
1．The writer was so________(专心于) in her work that she didn’t notice Jim enter the room.
2．After eight years of fighting，the Chinese people finally________(打败) the Japanese enemies.
3．Mr Green________(宣布) to his friends his engagement to Miss White.
4．Finding a cure for AIDS is one of the greatest________(挑战) facing doctors today.
5．It is none of your business whether I accept them or________(
