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Literature

Selection Quick Checks (English)






1.The zipper was first patented in the 1890s.
A.TRUE
B.FALSE



2.The key element that makes the zipper work is the slide.
A.TRUE
B.FALSE



3.The yoke on a pencil sharpener is connected to a set of gears and a crank.
A.TRUE
B.FALSE



4.The pencil is inserted in a hole in the crank of the pencil sharpener.
A.TRUE
B.FALSE



5.The gears at the opposite ends of the rollers turn inside the rotating internal gear.
A.TRUE
B.FALSE

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