Have you heard that _UFO landed on Center Street yesterday?----Of course.And___alien got out of the UFO and visited the TV station.A.a;the B.the;an C.a;an D.an;an

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Have you heard that ___UFO landed on Center Street yesterday?----Of course.And_____alien got out of the UFO and visited the TV station.A.a;the B.the;an C.a;an D.an;an
Have you heard that ___UFO landed on Center Street yesterday?
----Of course.And_____alien got out of the UFO and visited the TV station.
A.a;the B.the;an C.a;an D.an;an

Have you heard that ___UFO landed on Center Street yesterday?----Of course.And_____alien got out of the UFO and visited the TV station.A.a;the B.the;an C.a;an D.an;an
B

选 C
UFO 是以辅音音素开头的，用 a 。
alien 是以元音音素开头的，用an。
你听说过昨天有一个不明飞行物降落在中心大街上的吗？
当然听说了。一个外星人从飞行物中出来参观了电视台。

你好：
选 C 这里两处都表示泛指所以用不定冠词，而且 UFO 的首字母虽然是U，但是发
音不是元音，所以用 a， alien 的首字母的发音是元音，所以用 an
翻译；你听说昨天有一个UFO在中心街着陆了吗？
当然，还有...

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你好：
选 C 这里两处都表示泛指所以用不定冠词，而且 UFO 的首字母虽然是U，但是发
音不是元音，所以用 a， alien 的首字母的发音是元音，所以用 an
翻译；你听说昨天有一个UFO在中心街着陆了吗？
当然，还有一个外星人从UFO里出来，并且去了电视台。

希望对您有帮助！不清楚的请追问！

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B the表示特指，这里的语意明显是指定之前的UFO着陆你有没有听到。alien前面用an也很明显啊，跟元音字母无关但是是以元音发音的单词前不定冠词用an。而且你不认识那个外星人所以也不用特指是某一个。不用the。
！！！！
这里明显需要特指，用a表示经常性事件，谁会经常听到UFO着陆吗！...

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B the表示特指，这里的语意明显是指定之前的UFO着陆你有没有听到。alien前面用an也很明显啊，跟元音字母无关但是是以元音发音的单词前不定冠词用an。而且你不认识那个外星人所以也不用特指是某一个。不用the。
！！！！
这里明显需要特指，用a表示经常性事件，谁会经常听到UFO着陆吗！

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答案选 C, 唯一正确选项。

第一空 a 因为不是特指，只是“有一个”
第二空也不是特指，因为 alien 是元音所以改 a 为 an

选C，因为UFO的U的音标是以半元音开头，不定冠词应该用a;而alien的a发元音，不定冠词应该用an，所以选C

heard 和heard of的区别?have you heard that?have you heard of that?有啥分别? Have you ever heard have you heard have you have you heard Have you ever heard that I love you这句中的that可以去掉吗 could you please tell me something about the person( A that you have heardB that you have heard ofC who you hearD which you have heard of选什么?为什么? Have you heard from ___recently? Have you heard it before? have you heard什么意思 you have probably heard itbefore i heard that you have a final competition .today,i hope that you mush have a change to win it, i have heard that you( )just( )the football mi have heard that you( )just( )the football match我听说你们已经赢了足球比赛 They will let you to know that they have heard your signal 找一处错误并改正 they will let you know that they have heard your signal 翻译中文. I suppose that you have heard her name before!这句话语法对吗? 改错：Have you heard that Jeff's leg was broken while playing football?没看出语病~ but have you ever heard of a computer that saved a person's life? I heard that you already have their own happiness,so do not often meet it, Bill is ill.Have you heard about it?请问it 可以换成that吗?为什么呢?