Imagine you are writing a very formal email to external readers you don’t know well. Which of the following can be used for closing（）
A. Sincerely
B. See you tomorrow
Cheers
D. Respectfully yours
查看答案
It can be inferred from the pyramid of learning that____（）
A. lectureisoneofthemostineffectivemethodsforlearningandretaining information
B. students have different learning styles
C. intelligence is fixed at birth
D. praising effort is a much better way to motivate people to work hard and keep improving
The signals and clues provided by lectures will enable students to__（）
A. stay focused and avoid distractions
B. understand the lecturer’s stance
C. identify the key points
D. improve the listening skill
酸雨的主要前体物质是（）
A. CO2B:O3
B. C．CO
C. D．SO2
D. E．PAH
Which is NOT the meaning of the word“independent”（）
A. Not relying on
B. autonomous
C. self-directed
D. self-controlled
微信支付 
支付宝支付