[单项选择]After they tested the chemical and biological ______ of the samples we had sent them, they wrote up the report.
A. assets
B. characters
C. abnormities
D. properties

[单项选择]After being tested in many ways, this newly-designed machine will______in the near future.
A. take place
B. put into use
C. come into use
D. take action

[单项选择]

Passage Two
The difference between biological and physical science is not that one is inexact, the other exact, but in degree of exactness, this being related to the number of variables which must be dealt with simultaneously and the extent to which they can be controlled. In general, the biological sciences must deal with larger errors than the physical sciences; but this is not uniformly true, as the student will realize when he considers the accuracy of meteorological prediction or if he comprehends the meaning of the fact that the structural engineer considers it necessary very often to use a safety factor of two or three hundred per cent. The statistical principles of dealing with error of measurement, or in prediction and generalization, are the same whether the errors are large or small. Statistics is not a means of confusing issues that would otherwise be clear, nor a substitute for obtaining clear answers, but a means of checking and controlling conclusion
A. Never.
B. Always.
C. Usually.
D. Occasionally.

[单项选择]What was hailed as a biological revolution thirty years ago


A. Discovery of the structure of DNA
B. The decoding of the linear language
C. The mechanical device found in the human cell
D. The unbelievable complexity of DNA

[单项选择]It can be inferred that biological orthodoxy favors
A. no change.
B. step-by-step change.
C. all-of-a-sudden change.
D. radical change.

[单项选择]What was tested in this experiment


A. The influence of IQ test.
B. The influence of selected teachers.
C. The influence of teacher expectations.
D. The influence of teaching methods and materials.

[单项选择]The following biological factors determine one's body weight, except ______.

[单项选择]Genetics is the study of the biological factors that influence heredity and determine variation in living things.


A. duplicate
B. affect
C. clarify
D. improve