The researchers had excluded patients who had suffered a heart attack and those with heart failure because patients like these have a higher level of thrombaxane. “They will probably benefit even more than its inhibition.”
    Based on their findings, Gerrah’s team recommends that aspirin therapy not be discontinued before coronary artery bypass surgery.

1．From the passage we know that      .
    A．doctors usually get people who will have coronary artery bypass surgery to stop taking aspirin 7 days before the operation
    B．Aspirin is believed to increase release of thromboxane
    C．Taking aspirin up to the day coronary artery bypass grafting is performed seems to slow lung function recovery afterwards
    D．Patients suffering a heart attack have a lower level of thromboxane 
2．The purpose of the passage is to introduce to us that       .
    A．aspirin can make for release of thromboxane
    B．aspirin is useful for patients suffering a heart attack
    C．different ways turn out to be the same result
    D．aspirin may improve recovery after heart bypass