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【单选题】
热带雨林生态系统区别于其他生态系统的优势表现在： ①光合作用强烈 ②生物循环旺盛 ③雨林群落的生产力高 ④养分集中在地上的植物体内A.
①②③④
B.
①②③
C.
①②
D.
③④
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反馈参考答案：
举一反三
【简答题】The purpose of Subject Line is ( ) the topic of the letter.
【判断题】The subject line states what the letter is about. The short form “Re.” may precede the phrase that carries the subject matter.
A.
正确
B.
错误
【判断题】The subject line is usually the order or contract number to enable the receiver to be clear of the contents in the letter.
A.
正确
B.
错误
【单选题】What does the subject line tell the recipients?
A.
What the letter is about.
B.
When the letter has been sent.
C.
Who wrote the letter.
D.
Who typed the letter.
【判断题】The subject line states the gist of what the letter is about. The short form “Re.” may precede the phrase that carries the subject matter.
A.
正确
B.
错误
【简答题】Judging from the subject line, what is this email mainly about? The subject line shows that the writer wants to tell the recipient that she has come back to ___________ .
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