Onepossiblebenefitoftheexperimentdiscussedinthepassageis__________.
A.less crowded cities B.victory over death C.protection against fatal injury D.fewer deaths from heart attacks正确答案D
Onepossiblebenefitoftheexperimentdiscussedinthepassageis__________.
A.less crowded cities B.victory over death C.protection against fatal injury D.fewer deaths from heart attacks正确答案D