The scientist's work was based on _______.
A: occasional observations
B: systematic observations
C: observations of several nests
D: observations of undisturbed nests
A: occasional observations
B: systematic observations
C: observations of several nests
D: observations of undisturbed nests
举一反三
- The accuracy of scientific observations and calculations is always ______ the scientist' s time-keeping methods. A: at the mercy of B: in accordance with C: under the guidance of D: by means of
- Supportingsentencepresentsfacts,figures,thoughts,observations,examplesandpersonalexperiences.
- the observations and insights of the Buddha exclusively deal with
- a regular record of incidents or observations (n.)
- In a Latin square design, if there are 5 treatments with 6 repeat observations, how many observations in total can we get? A: 30 B: 150 C: 180 D: 250