Chimpanzees are frequently used as stand-ins for human beings in experiment.()
A: partners
B: role-models
C: stand-bys
D: substitute
A: partners
B: role-models
C: stand-bys
D: substitute
举一反三
- Before the drug is used on human beings, experts have to ______ dogs. A: be experimented B: experiment C: experiment with D: experiment on
- Which of the following is not one of similarities between human beings and chimpanzees?
- Sketch models are types of prototypes that are used frequently in the phase of ________ ideas and concepts.
- I hate them and everything they ______. A: stand for B: stand down C: stand in D: stand by
- They _________ what they believe to be right. A: stand B: stand up C: stand up to D: stand up for