This is         3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?
A.a(chǎn)B.a(chǎn)nC.theD./
A
冠詞是一種虛詞,一般用于名詞前面表示特指或者泛指某一個。冠詞的應(yīng)用都用一定規(guī)則,熟記這些規(guī)則是解題的關(guān)鍵。不定冠詞用在名詞前,表示泛指任何一個。定冠詞用在名詞前表示特指某一個。在專有名詞及表示泛指的復(fù)數(shù)名詞前一般不要冠詞,叫做零冠詞。需注意的是不定冠詞的用法是看詞首音素,不是看首字母,如:useful首字母是元音,但是詞首音素時輔音,故不定冠詞用a;hour首字母是輔音,但是詞首音素是元音,故用冠詞an。句意:這是一臺3D打印機(jī).這是一只人工耳朵.你能相信科學(xué)家們用3D打印機(jī)打印了這只人工耳朵嗎?結(jié)合語境可知本句中泛指的是任何一臺3D打印機(jī),故用不定冠詞.three詞首音素是輔音,故不定冠詞,用a.選A.
練習(xí)冊系列答案
相關(guān)習(xí)題

科目:初中英語 來源:不詳 題型:單選題

Red and white are     good match, as      powerful red balances     calm white.
A.a(chǎn), /, /B./, a, aC.the, a, /D.a(chǎn), the, the

查看答案和解析>>

科目:初中英語 來源:不詳 題型:單選題

It takes us about ____ hour to get to the Yangzhou-Taizhou Airport from Taizhou by ____ bus.
A.a(chǎn)n; aB.a(chǎn); theC.a(chǎn)n ; /D.a(chǎn) ; /

查看答案和解析>>

科目:初中英語 來源:不詳 題型:單選題

—What did ________ old man in red buy in your shop?
—He bought ________ umbrella.
A.a(chǎn) ; /B.the ; anC./ theD.a(chǎn)n ; a

查看答案和解析>>

科目:初中英語 來源:不詳 題型:單選題

There is      “f” and     “d” in the word “food”.
A.a(chǎn); anB.a(chǎn); aC.a(chǎn)n; anD.a(chǎn)n; a

查看答案和解析>>

科目:初中英語 來源:不詳 題型:單選題

     Great Wall is        longest wall in the world.
A. The , the             B. A .a .            C. The ,a

查看答案和解析>>

科目:初中英語 來源:不詳 題型:單選題

— What's in the box?
—There is          apple and some oranges in it.
A. a                         B. an                          C. the

查看答案和解析>>

科目:初中英語 來源:不詳 題型:單選題

GuanTianlang is _____________ 14-year-old boy, but he is famous all over the world.
A.a(chǎn)B.a(chǎn)nC.theD./

查看答案和解析>>

科目:初中英語 來源:不詳 題型:單選題

The Qingming Festival which is also called______Pure Brightness Festival, falls on April 5 every year, it is______time-honored tradition(悠久的傳統(tǒng)) for the Chinese to honor their ancestors.
A.The; aB./; theC.The; theD./; a

查看答案和解析>>

同步練習(xí)冊答案