Tradition becomes an obstacle across the path of change and progress when we______.
A. accept tradition only as a guide
B. rely too much on tradition without realizing its limitations
C. strongly desire for change without considering the possible consequences
D. plot the future irrespective of tradition
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【B4】
A. forgetting
B. forget
C. forgot
By "his outdoor cousins" the author means______.
A. other experimenters
B. the other doves of the same brood (n.窝)
C. doves under the natural sky
D. other birds in general
Which of the following should not be done in order to develop friendship?
A. Remember others' names.
B. Care about others.
C. Show interest in others' personal affairs.
【B9】
A. to hold
B. held
C. was held