Camera is to picture as______. () A: paint is to frame B: phone is to call C: horse is to gallop D: brush is to hair E: breeze is to fan

最吸引人的是那精彩武术和杂技（acrobatics）表演，口吐火焰的魔鬼，或下蹲疾驰（gallop）的小矮人。 A: What fascinates people most is the marvelous Kungfu and acrobatics. Players can make fire spray out of their mouths when they act as spirits, or can gallop while squatting to act as a dwarf. B: What fascinates people most is the marvelous Kungfu and acrobatics, players can make fire spray out of their mouths when they act as spirits, or can gallop while squatting to act as a dwarf. C: / D: /

中国大学MOOC: 最吸引人的是那精彩武术和杂技（acrobatics）表演，口吐火焰的魔鬼，或下蹲疾驰（gallop）的小矮人。

A 3-mo-old female infant has a history of poor feeding, shortness of breath during feedings, failure to thrive, and chronic cough. Physical examination reveals tachycardia and a gallop rhythm but no murmur. There is hepatomegaly but no cyanosis. A chest radiograph reveals cardiomegaly. The most appropriate diagnostic test is: A: Echocardiogram B: Electrocardiogram C: Blood culture D: Serum amino acids E: Urine pH