根据短文内容，判断以下句子的正误。你认为正确的句子，请在答题卷相应空格内写“T”，错误的写“F”。

    When we meet someone for the first time, we often would like to talk about ourselves. We just want to show the best to others. But why not listen? Sometimes, listening is better than talking. Then how to be a good listener? Here are a few suggestions:
◆Look at the speaker. It shows you are listening carefully. It’s also a good way to “talk” to your friend with your eyes.
◆Don’t cut in. Give your friend enough time to say what she or he thinks. Don’t stop your friend’s words. Even if you want to say something, you should wait till your friend finishes.
◆ Try to understand. When you are listening, try to catch her or his feelings and ideas. It helps you know your friend better. And your friend will feel better about you. She or he may think you are the right person to talk with.
◆Show your ideas at the right time. "It’s interesting." "What happened next?" … These are useful when you are listening. And you can give advice when your friend asks for it.
   It’s never too late to become a good listener. It can change your life and the lives of the people in your life.

质量为0.2千克的水温升高50℃，求水吸收的热量Q_吸．C水=4.2×10³J/（kg•℃）．

①指南针是中国的四大发明。

②爸爸买回了莴笋、土豆、南瓜、西瓜、菠菜等新鲜蔬菜。