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97. only if... 决不除非 用法透视 only if 意思是只有......才......。only if即可并列在一起，也可分开。 支持范例 1. A student is allowed to enter this room only if a teacher has given permission. 只有得到教师的许可学生才可以进入这个房间。 2. Seat belts
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[00:00.00]357 Now That's Really a Long Distance Call [00:06.14]In a live telephone link from the Shenzhou-V. [00:10.29]astronaut Yang Liwei last night told his family he felt very good in space. [00:16.56]I promise to fulfill this mission smoothly. [
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[00:00.00]a car driver [00:04.76]In my country,the driver and the person [00:07.25]sitting in the front passenger seat [00:09.53]must wear seat belts [00:11.93]That's the law. [00:13.64]The people in the back seat [00:15.36]don't have to wear seat be
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[00:02.73] [00:05.82]Listen to This [00:07.77]Write the number [00:10.72]How much does this baseball cap cost? [00:15.99]That one costs $10. [00:21.07]Why don't you buy this green T-shirt? [00:26.20]No,I prefer this red one. [00:30.80]I like these sw
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BERLIN, Sept. 11 (Xinhua) -- Ukrainian Boxer Wladimir Klitschko defended his three heavyweight champion's belts against challenger Samuel Peter by technical knockout at the tenth round on Saturday night in Frankfurt. Klitschko dominated(控制) the h
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17 Where are the passengers? [A] In the train [B] On the ship [C] In the plane 18 Why has the captain asked the passengers to keep their seat belts on? [A] The plane is going to land [B] The plane is going to take off [C] The air might become very ro
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