B. We have to keep up with new technology.

　　C. Household items should be upgraded quickly.

　　D. We should hold on for new technology to last.

　　D

　　In the early 1950s, researchers found that people scored lower on intelligence tests if they spoke more than one language. Research in the sixties found the opposite. Bilingual people scored higher than monolinguals, people who speak only one language. So which is it?

　　Researchers presented their newest studies last month at a meeting of the American Association for the Advancement of Science. The latest evidence shows that being bilingual does not necessarily make people smarter. But researcher Ellen Bialystok says it probably does make you better at certain skills.

　　Ellen Bialystok said, “Imagine driving down the highway. There’re many t

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