GRE Logical Reading: ETS-GRE逻辑单题ETS - RJO6U6AC5P63WKS6J$

If the statements above are true, then it must also be true that A. if there is a deficiency in the amount of heart hormone secreted, low blood pressure will result B. it is large quantities of the heart hormone that cause heart attacks to occur C. the effects of a small amount of the heart hormone will be long-lasting in the body D. if a device that is only a mechanical pump is used as an artificial heart, it will not perform all the functions of the human heart E. any drug that regulates blood pressure will have its effect by influencing the amount of the heart hormone secreted