22 multiple-choice questions, written entirely in Spanish like the real exam, on Science and Technology: innovation, personal technology, and societal impact. Each has a full explanation of why every option is right or wrong.
Weigh both sides. Unit 4 sources on technology usually present a benefit and a cost, don't assume the passage is only positive or only negative.
Learn the technical vocabulary. Words like inteligencia artificial, telemedicina, and automatización appear often, know them cold.
Connect technology to access. La brecha digital (the digital divide) is a recurring idea, not everyone benefits from innovation equally.
Read the explanations even when you're right. Each one reinforces a fact or vocabulary word that often returns in a different form on the exam.