单选题
It can be inferred from the passage that the future of online visits will mostly depend on whether ______.
A、
the employers would remain confident in them
B、
they could effectively replace office visits
C、
HMOs would cover the cost of the service
D、
new technologies would be available to improve the E-health project
【正确答案】
B
【答案解析】
最后一段表明这个试验项目的目的是决定在线看病是否会提高工人的生产力，以至能够抵消服务的成本。所以正确答案是B(他们可以有效地替代医院看病)。
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