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Friday, September 4, 2026 · 668 words · 6 minutes · 0 reads · Intermediate

Article details

This graded Chinese reading practice article combines authentic reading with optional pinyin, translation, audio, vocabulary, and comprehension practice.

Author
HSK Read
Published
Friday, September 4, 2026
Updated
Sunday, September 20, 2026

Read

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网球为什么装在密封罐里卖?

Reading questions and answers

According to the article, why do pressurized tennis balls need sealed can packaging?

To prevent the air inside the balls from leaking out.

According to the article, how many times is the air pressure inside a tennis ball approximately that of the outside?

About twice.

According to the article, what should one do with tennis balls after opening the sealed can?

Use them as soon as possible.

According to the article, why do balls like footballs and basketballs not need sealed cans?

Because they can be inflated with a pump at any time.

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