单选题：What causes the problem of having internal organs in wrong o

题目内容：

What causes the problem of having internal organs in wrong order in one's real life? A． Genetic
B． Natur
C． Explosio
D． Not mentione

参考答案：

答案解析：

In total darkness, doves _____A) use landmarksB) don't know

In total darkness, doves _____A) use landmarksB) don't know which way to flyC) f

分类：专四题型：单选题

What is the company's main aim in product development?A．introducing new designs

分类：专四题型：单选题

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One problem with Turners' distribution process was theA．unreliable transportatio

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Mary had an_____; she's been knocked down by a taxi.A． event B． occurrence C． ac

分类：专四题型：单选题