题目：
Passage Four
When is a driver likely to have a sleep-related accident according to researchers
A．In the middle of the morning is 10 times as likely as those driving in the evening.
B．Very early in the evening is as likely as those driving early in the morning.
C．Very early in the morning is much more likely than those driving early in the evening.
D．In the middle of the evening is 10 times as likely as .those driving early in the morning.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：解析：(1) 当地货源情况。 (2) 外汇管制。 (3) 差异成本。 (4) 公司之间或公司内部协议情况。
