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【华慧考博】考博英语每日一练（12.2）考博加油！
1. Even in the 1700s, during the early US settlements, ______ religious groups who opposed slavery, and later formed the backbone of the Abolitionist Movement.
A. there have
B. there are
C. there were
D. have there been
2. The railway ticket for one single journey between Beijing and Shanghai is ______ for five days.
A. fruitful
B. beneficial
C. valid
D. effective
【考博英语英译汉练习】
Every spring, when the pollen concentration rises, the nose and throat departments of hospitals will be packed. Incidence of the allergic diseases has been growing in China in recent years. Incidence of allergic rhinitis, which used to be widespread in some developed Western countries only, also began to prevail in China.
