My aunt has a______son.A．four-years oldB．four-year-oldC．fourth-year-oldD．four-ye
题型：不详难度：来源：
My aunt has a______son.| A．four-years old | B．four-year-old | C．fourth-year-old | D．four-years-old |
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答案
| B |
解析
| 合成形容词的基本构成。a/an+数词-名词（必须为单数）-形容词。用a还是an要由数词的第一个因素是辅音因素还是元音因素。 |
举一反三
Don’t worry. There is ________ time left.| A．a little | B．a few | C．little | D．few |
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One million, two hundred thousand and twenty-six means _______.| A．102,000,206 | B．1,200,026 | C．10,002,026 | D．1,200,260 |
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One hundred and ten thousand, two hundred and six is ________.| A．110,260 | B．101, 260 | C．110, 206 | D．101,206 |
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_________ volunteers will give out leaflets to ask people to protect the wetlands.| A．Two hundreds | B．Hundreds of | C．Two hundred of | D．Hundred of |
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people in the world are suffering from the H1N1 flu.| A．Several thousands of | | B．Ten thousands | | C．Thousands of | | D．Thousands |
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