—Susan, what are the advantages of MP5 players?—Mom, they are smaller and lighte
题型：不详难度：来源：
—Susan, what are the advantages of MP5 players?
—Mom, they are smaller and lighter ______ they can be carried very easily.| A．unless | B．if | C．until | D．so that |
|
答案
| D |
解析
| unless除非，如果不；if是否，如果；until 直到；so that以便，所以。句意：苏珊，ＭＰ５播放器的优势是什么？——妈妈，它们更小更轻便，所以它们携带非常方便。结合语境可知前后是因果关系，故选Ｄ。 |
举一反三
—Shall we get off the bus here?
—Yes. But we won’t get off _______ it stops. | A．when | B．until | C．while | D．after |
|
Time waits for no man. But teenagers won’t realize the value of time until it’s gone. Don’t waste your time, you will regret it.
A. and B. or C. but |
| We can’t do well in examination _________ we study hard in school time. |
| Although they feel tired,__________they still go on working. |
－_____do you tell your mother about your English result?
－By using my mobile phone. |
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