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【判断题】
芳环上发生亲电取代反应时，所有第一类取代基都使芳环上电子云密度增大，使芳环活化A.
正确
B.
错误
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举一反三
【单选题】Tattoo can be traced back to as early as ______.
A.
the middle of the 19th century
B.
the year 1991 when a mummy was discovered
C.
2000 BC
D.
3300BC
【简答题】影响财政支出规模的因素分为()和()两大方面因素。
【简答题】影响财政支出规模的因素;
【简答题】试分析影响财政支出规模的因素。
【单选题】Traveling for pleasure ______.
A.
can be traced back to the 12th century
B.
became a reality in 1889 when the Savoy Hotel was built
C.
was almost non-existent during the Middle Ages
D.
was a privilege enjoyed only by the rich in the Middle Ages
【简答题】简析影响财政支出规模的因素。
【单选题】The police traced the thief to his hiding place.
A.
searched
B.
tracked
C.
vanquished
D.
located
【单选题】The passage suggests that the disparagement of rhetoric by some people can be traced to their______.
A.
reaction against science
B.
lack of training in logic
C.
desire to persuade people as completely as possible
D.
misunderstanding of the use of the term 'scientistic'
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