Choose the word that has the same meaning as the underlined word.

Scientific progress brings us many conveniences and advanced machines, such as computers, automobiles, and so on.

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I often eat sticky rice cake, but I don’t know _______ make it.

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In Science, you should repeat your _______ several times to make sure that the first results weren’t just an accident.

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Simply speaking, _______ is the tools and machines that help to solve problems.

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Scientists are planning _______ Mars in the near future.

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- _______ do you play tennis?

- For exercise.

The new tablet has a longer _______ life than the old one. It lasts close to eighteen hours.