A．The songbirds, parrots and hummingbirds imitate humans.

　　B．FOXP2 is active in one of the brain regions of the songbird brain.

　　C．Songbirds have the same vocal learning brain circuits as human.

　　D．FOXP2 is a gene that is known to be involved in human language.

　　42．The underlined word “underpins” in the first paragraph probably means “________”．

　　A．increases

　　B．supports

　　C．prevents

　　D．decreases

　　43．What can we infer from the passage?

　　A．FOXP2 was involved in human language about 12 years ago.

　　B．Six people donated brain tissue to the Allen Brain Institute in Seattle.

　　C．Experiments with songbirds are likely to help cure Huntingtons disease.

　　D．Constance Scharff discovered FOXP2 at the Free University of Berlin.

　　44．What is the passage mainly about?

　　A．Birds have different genes from humans.

　　B．Humans and birds share the same singing genes.

　　C．How FOXP2 affects the brains of humans and birds.

　　D．Experiments with birds can cure the disease of humans.

　　D

　　(2015·扬州中学质检)The phone ID flashed, “Emergency Vet”. “Oh no” I whispered. I could not lose Merlin now.Ron and I had tried to have children for a long time with depressing results. I threw myself into my work. Any maternal feelings I had were spent on Merlin.

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