根据本空后的 in the universe可知,此处应填名词复数,即sights。故答案为:sights。考查动词时态。句意:几个世纪以来,人们对研究它们表现出极大的兴趣。根据本空前的For centuries可知,此处应采用现在完成时或现在完成进行时。故答案为:have shown 或 have been showing。考查连词。句意:根据他的计算,哈雷预测,这...
根据前文“amongthe most beautiful andinteresting”可知,此处指众多有趣景观之一,所以空处名词需用复数。故填sights。19.【答案】haveshown/have been showing【解析】考查时态。句意:几个世纪以来,人们对研究它们表现出极大的兴趣。根据时间状语Forcenturies可知,空处谓语动词需用现在完成时态或现在完成进行时态,表示...
Comets are among the most beautiful and interesting_1(sight) in the universe. For centuries, people_2(show) great interest in studying them. In 1682, Edmund Halley, an astronomer, noticed a comet that was especiallybright and large. Based on his calculations, Halley predicted that this bright...
Paragraph 1:Comets are among the most interesting and unpredictable bodies in the solar system. They are made of frozen gases (water vapor, ammonia, methane, carbon dioxide, and carbon monoxide) that hold together small pieces of rocky and metallic materials. Many comets travel in very elongated...
Paragraph 1:Comets are among the most interesting and unpredictable bodies in the solar system. They are made of frozen gases (water vapor, ammonia, methane, carbon dioxide, and carbon monoxide) that hold together small pieces of rocky and metallic materials. Many comets travel in very elongated...
Paragraph 1:Comets are among the most interesting and unpredictable bodies in the solar system. They are made of frozen gases (water vapor, ammonia, methane, carbon dioxide, and carbon monoxide) that hold together small pieces of rocky and metallic materials. Many comets travel in very elongated...
Comets are among the most interesting and unpredictable bodies in the solar system. They are made of frozen gases (water vapor, ammonia, methane, carbon dioxide, and carbon monoxide) that hold together small pieces of rocky and metallic materials. Many comets travel in very elongated orbits that...
the most beautiful and interesting(最美丽、最有趣的为形容词最高级,后面应接名词,among表示三者或三者以上,其后面的名词应用复数形式,sight景象)为可数名词,故填sights.2)have shown/have been showing.考查时态。句意:几个世纪以来,人们对研究它们表现出极大的兴趣。主语为people,谓语应用复数形式,根据时间状语...
Paragraph 1:Comets are among the most interesting and unpredictable bodies in the solar system. They are made of frozen gases (water vapor, ammonia, methane, carbon dioxide, and carbon monoxide) that hold together small pieces of rocky and metallic materials. Many comets travel in very elongated...
Comets are among the most interesting and unpredictable bodies in the solar system.They are made of frozen gases (water vapor, ammonia, methane, carbon dioxide, and carbon monoxide) that hold together small pieces of rocky and metallic materials.Many comets travel in very elongated orbits that ca...