单项选择题

According to paragraph three, what can we learn about the experiment

A．30% of the patients take placebos.
B．The effect of placebo has nothing to do with the dose.
C．Patients feel still better if they are given two instead of one placebo.
D．Patients know they are taking placebos rather than real drugs.

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热门试题

单项选择题

How do doctors' expectations influence patients

A．Doctors tell patients explicitly whether they will heal or not.
B．Doctors tell patients secretly whether they will heal or not.
C．Doctors communicate their expectations through other people.
D．Doctors communicate their expectations unconsciously to patients.

单项选择题

What is the author's opinion on the first job

A．It is most probably the right job for you, so hold it.
B．It is most probably a training job, so feel free to give it up for another one.
C．It is not your final job, so change jobs as much as possible.
D．It is a good test about your ability to keep a job.