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.

It has been found that the placebo is effective in every disease.

The placebo has been found to work ________ a lot of different cases. A: with B: on C: in D: at

If patients ________ a bad reaction to medicine, then they will also show a bad reaction to the placebo. A: avoid B: prevent C: expect D: deny

The third group (with the real drug) showed ________ results as the group that took the placebo. A: much the same B: much bette C: so D: such

The study had some important limitations. It was a pilot study and ( ) a placebo control. A: lacked B: missed C: lost D: neglected

The most successful treatment described in the passage was a serum prepared from ______. A: the blood of patients who have been stung B: poison extracted from bees C: crushed bodies of bees D: a placebo and a crushed-body extract

In what cases, do placebos work better? A: The patient has a lot of trust in the doctor. B: The doctor really wants to help the patient. C: The placebo looks exactly like the real medicine. D: The patient doesn't believe he will get better.

7. The risk of developing breast cancer in a certain population is 4%. A study investigating hormone replacement therapy finds that the hormone replacement therapy group has a 25% greater chance of getting breast cancer compared to the placebo group. Based on the study's finding, how many additional cases of breast cancer could one expect in a group of 100 women who undergo hormone replacement therapy compared with 100 who do not?

下述哪种表述是关于安慰剂效应（placebo effect）的例子？ A: A.被试服用某种能影响任务成绩的药物 B: B.当被试知道被监控时行为会不同 C: C.当被试知道有关于实验假设时行为会不同 D: D.以上均不对