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【简答题】
It can be inferred from the passage that the drop in Amtrak ridership was due to the fact that ________. A) trains were not suitable for short distance passenger transportation B) trains were not the fastest and most convenient form. of transportation C) trains were not as fast and convenient as they used to be D) trains could not compete with planes in terms of luxury and convenience
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皮皮学刷刷变学霸
举一反三
【多选题】海鲜容易腐败变质有以下哪几个原因。()
A.
鱼的鳃和内脏附着大量的腐败菌
B.
海鲜味道太腥
C.
海鲜富含容易被微生物分解的蛋白质和油脂
D.
海鲜体内有大量的酶存在
【单选题】肺癌引起上腔静脉阻塞综合征是
A.
肺癌引起上腔静脉阻塞综合征是 A.侵犯心脏所致
B.
侵犯纵隔，压迫上腔静脉所致
C.
压迫到主动脉所致
D.
压迫双侧锁骨下静脉所致
E.
压迫纵隔淋巴结所致