”Sir Gawain and the Green Knight” is__（）
A. novel
B. Arthurian legend
C. epic
D. fairy tale
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血浆纤维蛋白原含量应为（）
A. 2 –
B. 4 mg/L
C. B．3 –
D. 5 g/L
E. C．2 –
F. 4 g/L
G. D．2 –
H. 3 g/L
In contrast to the earlier linguists, modern linguists tend to___（）
A. attempt to continue the standardization of the language
B. evaluate language practices in terms of current speech rather than standards or proper patterns
C. be more concerned about the improvement of the language than its analysis or history
D. be more aware of the rules of the language usage
Which of the following statements is not mentioned in the passage（）
A. It is generally believed that the year 1500 can be set as the beginning of the modern English language
B. Some other languages had great influence on the English language at some stages of its development
C. The English language has been and still in a state of relatively constant change
D. Many classes or groups have contributed to the development of the English language
A heat pump is used to make the room comfortable by using_____（）
A. electric resistance
B. natural heat and cool
C. coal energy
D. petrol energy
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