做牛市套利的投资者对股市长期看好，认为远期交割期货合约的涨幅会小于近期交割的股指期货合约的涨幅。 ()
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比起头肩形态来说，三重顶(底)更容易演变成持续形态，而不是反转形态。 ()
A. 正确
B. 错误
How do drugs help people stop smoking work？
A. They act on smokers' brain.
B. They fight against nicotine directly.
C. They have the same effect on dopamine as nicotine does.
D. They counteract the effect on dopamine made by nicotine.
A．OrB．HoweverC．NeverD．Meanwhile
A. Or
B. However
C. Never
D. Meanwhile
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