Compared with Arizona's Pima Indian, Pima diet in Mexico remains healthy because ______.
A. they are far away from America
B. they are thin
C. they lives comfortably than those Arizona's Pima
D. they don't follow Americans to eat junk food
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2岁以上,以间质性角膜炎、马鞍鼻、神经性耳聋等特征常见,可见于:
买进套期保值的目的是锁定卖出价格,免受价格下跌的风险。()
A. 正确
B. 错误
在股指期货运行过程中,只要期货价格与现货价格发生偏离,就可以进行股指期货的套利交易。()
A. 正确
B. 错误