| A | B |
|---|
| a great deal | a lot |
| addictive | easy to become dependent on |
| adolescents | teenagers |
| aerobic | with increasing oxygen intake |
| analyze | to look closely at, evaluate |
| angiograms | x-rays of the heart arteries |
| antibiotics | types of medicine made from tiny microorganisms that are effective in fighting off other disease-causing microorganisms |
| anxiety | worry, nervous fear with or without reason about what will happen in the future |
| apparent | obvious; able to be seen clearly |
| arteries | large blood vessels going from the heart |
| aspirin | a painkiller (salicylic acid) in tablet form |
| attractive | pretty; handsome |
| blank | clear, without activity |
| block | to be in the way of; to prevent |
| blurred | unclear; obscured |
| boiling | heating a liquid until it reaches the temperature of 212?F or 100?C |
| cholesterol | a slippery white crystal-like substance found in the body, including the blood and the brain |
| circulating | moving or flowing around in a cycle |
| cluster | a tight grouping of something |
| complain | say they don't like |
| concentrate | think hard |
| concluded | determined; decided |
| confident | with strong belief in one's ability or that something will definitely happen |
| confused | unclear; mixed up |
| cough | push air out of the throat suddenly with a sharp sound |
