The seventeenth century was a period of great advances in science. For example, early in this century, Galileo perfected the telescope and in 1609 published “The Sidereal Messenger,” in which he reported the results of his ____42____ of the Milky Way, the moon, and the planet Jupiter. Only a few years later, the Dutch scientist Anton van Leeuwenhoek performed ____43____ research with the microscope, discovering among other things that weevils, fleas, and other ____44____ creatures come from eggs rather than being spontaneously generated. Not long after this, William Harvey, an English physician, discovered the method ____45____ which blood circulates in humans and other animals and in 1628 published his findings in the historic treatise “On the Motion of the Heart and Blood in Animals.” ____46____ , in the 1660s, Isaac Newton discovered the law of gravitation and the laws governing the physics of light, and he also invented differential calculus. 【題組】43
(A)traditional
(B)pioneering
(C)inconsistent
(D)falsifiable
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