There are many people in the street.Two boys are running.A car is coming from behind.It is very dangerous!A woman is riding a bike and talking on the phone.It is not safe (安全的).A girl is waiting for the green light.That is safe.
Many children are playing in the park.Some are playing football and some are jumping rope.Some boys are swimming in the lake.That is dangerous.
任务一:根据短文内容,选择正确的答案。
任务二:读短文,回答下面问题。