语法填空。

    Chaplin was an extraordinary performer who ____(star) in and directed many outstanding comedies. Few people were bored ____(watch) his moustache, his gestures or his entertaining reactions when chased by ____(detective). Being drunk, sliding on a banana skin or whispering his own failures to nobody, he made us feel more content ____our life without any verbal explanation. His particular sense of humor has astonished everybody throughout the world up to now.

    In a small budget film, he played a badly-off person ____(wear) worn-out shoes and ____(mess) clothes. On one occasion, he ____(trap) by a snowstorm in a vast mountainous area. He overcame many difficulties, ____ he was not fortunate enough. With all the porridge ____(eat) up, he picked out a shoe and boiled it to eat. What he performed was a total failure. According to an actress, his acting was so ____(convince) and amusing that everybody couldn't help bursting into laughter.

两块平行金属板，相距2厘米，组成一个电容器．当将它接在200伏的直流电压上时，它所带的电量是5×10^﹣8库．那么，电容器的极板间的场强大小为____，电容器的电容大小为____．

如图，将△ABC向右平移5个单位长度，再向下平移2个单位长度，得到△A′B′C′，请画出平移后的图形，并写出△A′B′C′各顶点的坐标．

    Diets have changed in China-and so too has its top crop. Since 2011,the country____（grow）more corn than rice. Corn production has jumped nearly 125 percent over____past 25 years, while rice has increased only 7 percent.

    A taste for meat is____(actual) behind the change. An important part of its corn is used to feed chickens, pigs, and cattle. Another reason for corn's rise. The government encourages farmers to grow corn instead of rice____(improve) water quality. Corn uses less water____rice and creates less fertilizer(化肥) runoff. This switch has decreased____(pollute) in the country's major lakes and reservoirs and made drinking water safer for people.

    According to the World Bank, China accounts for about 30 percent of total____(globe)fertilizer consumption. The Chinese Ministry of Agriculture finds that between 2005-when the government ____ (start) a soil-testing program ____ gives specific fertilizer recommendations to farmers - and 2011, fertilizer use dropped by 7.7 million tons. That prevented the emission(排放) of 51.8 million tons of carbon dioxide. China's approach to protecting its environment while ____ (feed) its citizens "offers useful lessons for agriculture and food policymakers worldwide." says the bank's Juergen Voegele.