Inventions make the world better, smarter and a little more fun.

　　26. The folding bike helmet is ________.

　　A. thick and heavy                            B. made from metal

　　C. not as strong as a traditional one                D. flexible enough to fold almost flat

　　27. Which company makes self-tying shoes?

　　A. Adidas.                B. Kappa.            C. Nike.                D. Li-Ning.

　　28. The smart alarm clock can NOT ________.

　　A. improve our sleep                            B. control our weight

　　C. record our sleep cycles                        D. control the temperature in the bedroom

　　29. If a child has a poor eyesight, he may be in the lack of ________.

　　A. vitamin A            B. vitamin B            C. vitamin C            D. vitamin D

　　30. You can find the passage in a ________.

　　A. newspaper            B. story book            C. guide book            D. cookery book

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