乒乓球哪一年被正式列入奥运会比赛项目()
A、1988
B、1989
C、1926
D、1927
参考答案:A
根据句意及首字母提示补全单词。
1. Don't worry. I have made much p_____ in learning English.
2. —Has she made r_____ progress in her study? —Yes, she has.
3. I'm sure you'll s_____ if you work hard.
4. Miss wang asked the students to write a 400-word c_____ about Autumn.
5. Can you d_____ it in detail?
DNA指导的RNA合成过程称为()
A.反转录
B.中心法则
C.复制
D.翻译
E.转录