【判断题】Memos can be as formal as a business letter and used to present a report.()
【简答题】tRNA的二级结构都呈________。
【单选题】A. He’s writing a report. B. He’s on a business trip. C. He’s attending a meeting. D. He’s on his holiday.
A.
He’s writing a report.
B.
He’s on a business trip.
C.
He’s attending a meeting.
【简答题】A. He’s writing a report. B. He’s on a business trip. C. He’s attending a meeting. D. He’s on his holiday.