第33题: [单项选择]心脏冲动的起源部位是() A. 房室结 B. 窦房结 C. 浦氏纤维 D. 心室 E. 心房 参考答案:B 答案解析:窦房结是心脏正常的起搏点,位于右心房壁内。
第34题: [单项选择]There is little doubt that the arts in America will be greatly ________ by the large numbers of European artists who are taking up residence and often citizenship in the United States. A. erupted B. enriched C. erased D. elicited 参考答案:B 答案解析:[句意]美国的艺术会因居住在美国和取得美国公民权的众多欧洲艺术家而得到极大丰富,这一点很少有人怀疑。
[辨析]动词辨义。erupt意为“爆发,喷发”,如:The volcano erupted af