题目内容：
According to the writer，__________．
参考答案：
答案解析：
单选题：According to the writer，__________．
- 题目分类：英语
- 题目类型：单选题
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请在72处填写答案。
请在72处填写答案。
The underlined words“this work”in the last paragraph refer t
The underlined words“this work”in the last paragraph refer to__________．
请在53处填写答案。（ ）
请在53处填写答案。（ ）
请在45处填写答案。（ ）
请在45处填写答案。（ ）
What does the underlined word“upgrade”mean？(Within lo words)
What does the underlined word“upgrade”mean？(Within lo words)____________________