Before the drug is used on human beings, experts have to ______ dogs.
A: be experimented
B: experiment
C: experiment with
D: experiment on
A: be experimented
B: experiment
C: experiment with
D: experiment on
D
举一反三
- In designing an experiment, blocking is used A: to reduce variation B: to control the level of the experiment C: as a first step in randomization D: None of the above
- (13 Down) What must this experiment have the potential to do, to be a ______ (有效的) scientific experiment?
- 1. According to Dr. Ariely’s book, Predictably Irrational, what might be a weakness of human beings? (Para.4) A: His experiment shows that people just couldn’t bear to see their options vanish. B: His experiment shows that people always want to keep all the doors open. C: His experiment shows that people are fond of playing games. D: His experiment shows that people do not bother to bring with them the key to the door.
- A) Tony could not continue the experiment B) Tony finished the experiment last night. C) Tony thought the experiment was well done. D) Tony had expected the experiment to be easier.
- 中国大学MOOC: In designing an experiment, blocking is used
内容
- 0
We have to do another experiment today, ____?
- 1
The experiment with Koko shows() A: gorillas’ IQ scores are as high as human beings’ B: animals are much cleverer than we used to believe. C: parent animals can pass learning to their offspring intentionally. D: some gorillas are smarter than many humans.
- 2
According to Ms. Yang, any experiment on human embryos is not allowed in _____ , while it is allowed in _____.
- 3
Evidence obtained from observation and experiment is often used to _____ a scientific theory.
- 4
She did the experiment ______ the teacher had directed.（4.0分） A: as B: that C: what D: before