A. everyone  B. how long  C. weak      D.  higher    E. instead of   F. However G. speed  H. left       I. until    J. lower    K. enjoyed   L. how far

 
Isaac Newton was born in  Woolsthorpe , England, on December 25,1642. He was born early and he was very___.No one believed he could continue to live. But he surprised ____ . He had one of the most powerful minds in history. And he lived_____he was 84.
Newton’s father died before he was born. His mother married again a few years later. She ___ Newton with his grandmother.
The boy was not a good student .Yet he was curious(好奇的) and liked to make things ,such as kites, clocks and simple machines . Newton also____finding new ways to answer questions or solve problems .As a boy ,for example, he wanted to find a way to measure(测量) the __ of the wind .On a windy day , he measured how far he could jump with the wind at his back .Then he measured ____ he could jump with the wind in his face .From the difference between the two jumps, he made his own measure of the power of the wind.
Strangely ,Newton became a much better student after a boy kicked him in the stomach.The boy was one of the best students in the school.Newton decided to get even (报复) by getting _____ marks than the boy who kicked him .In a short time ,Newton became the top student at the school.
Newton left school to help on the family farm.. ___, the boy was not a good farmer.He spent his time solving math problems. Instead of taking care of the farm. He spent hours visiting a bookstore in town, _____  selling his vegetables in the market.An uncle believed that Newton would do better as a student than as a farmer.So he sponsored(资助) the young man into Cambridge University to study math.