题目

. Would you eat a ready meal from the fridge rather than cook from scratch? Have you been doing internet shopping rather than going to the stores? What can't you be bothered to do? A study into how lazy British people are has found more than half of adults are so idle they'd catch the lift rather than climb two flights of stairs. Just over 2000 people were quizzed by independent researchers at Nuffield Health, Britain's largest health charity. The results were startling. About one in six people surveyed said if their remote control was broken, they would continue watching the same channel rath如图，杠杆的一端挂一重物，杠杆处于静止状态，请画出力F的力臂L．