【简答题】A.They may have to continue to work in old age. B.They may regret the time they wasted. C.They may have nobody to depend on in the future. D.They may have fewer job opportunities.
【简答题】A.They may breed out of control. B.They may cause damage to the environment. C.They may behave abnormally. D.They may affect the results of experiments.
【简答题】D. In case of unidentified smoke. u Do not panic. Stay______. u Cover your _________ with a wet towel or tissue paper. u Stay ______and calm. u Follow the instructions of______________. u Seek_______ ...