关于遗传力大小的表述，正确的是
A. 某一性状的遗传力值为40%，属于高遗传力性状。
B. 某一性状的遗传力值为30%，属于中遗传力性状。
C. 某一性状的遗传力值为10%，属于低遗传力性状。
D. 某一性状的遗传力值为70%，属于高遗传力性状。
The word “lonely” in Wordsworth's poem conveys the poet's_____at the very beginning.
A. calmness
B. depression
C. sadness
D. depression and sadness
Wordsworth shows the happiness of the flowers, "Tossing their heads," by ______.
A. metaphor
B. personification
C. repetition
D. simile
Dickens’ writings from 1836 to 1841 show the characteristic of.
A. optimism
B. mature
C. pessimism
D. irritation
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