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The pen ______he is writing is mine.

A. with which     B. in which       C. on which   D. by which

A


解析:

. with which是"介詞+關(guān)系代詞"結(jié)構(gòu),常用來(lái)引導(dǎo)定語(yǔ)從句.with有"用"的意思,介詞之后只能用which,不能用that. with which在定語(yǔ)從句中作狀語(yǔ),即he is writing with a pen.

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The pen ______he is writing is mine.

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The pen ______he is writing is mine.

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You may have never heard of Ladislao Biro, but you have certainly heard of the pen he invented—the ballpoint pen, or biro. Before Biro invented his pen, people wrote with fountain pens. The ink smudged(弄臟) and blotted and the pens sometimes leaked. In the 1930s Biro was a magazine editor in Budapest in Hungary. He noticed that the inks which the magazine’s printers used dried very quickly. Biro wondered if quick-drying inks could be used in pens. He came up with the idea of a tube of ink with a free-moving ball on the end. As a person wrote, the ball collected ink from the tube and rolled it on to the paper. The pen would be cheap and could be thrown away when the ink ran out.

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