小欣和小涛是同班同学，他们在学习上互相关心、互相帮助，并且经常一起上学。于是班里有人悄悄地说他俩“早恋”，小欣知道后非常苦恼和困惑，假如你是小欣的好朋友，你会劝她（    ）

①与异性相处，有助于我们了解异性的思维方式

②我们与异性交往，成为好朋友，并不仅仅是性别的吸引，而是能从对方身上看到某些优秀品质

③与异性交往是我们成长的一个重要方面，我们应正确看待

④男生女生之间要少说话，保持距离

生物的环境是指生物生存的地点。

   Two men are walking in the park. One is Mr. Brown, a worker, the other is Mr. Black. Mr. Brown is going to a chair. It is next to the road. Mr. Black is after him. Mr. Brown finds Mr. Black. Now Mr. Black begins to walk faster (更快). Because he wants to get to the chair before Mr. Black. Now Mr. Black begins to walk faster because he also wants to get to the chair first. Then they both run. Mr. Black runs faster than (比) Mr. Brown. So he gets to the chair first and sits down on it. Mr. Brown runs after Mr. Black. When he gets to the chair. He sees Mr. Black sitting on it. He is sorry to show a notice(通知)with the words“Wet Paint(油漆未干)”to Mr. Black. Now Mr. Black knows why Mr. Brown is going to the chair.

如图，一绝缘轻弹簧的下端固定在斜面底端，上端连接一带正电的光滑滑块P，滑块所处空间存在着沿斜面向上的匀强电场，倾角为θ的光滑绝缘斜面固定在水平地面上，开始时弹簧是原长状态，物体恰好处于平衡状态，现给滑块一沿斜面向下的初速度v，滑块到最低点时，弹簧的压缩量为x，若弹簧始终处在弹性限度内，以下说法正确的是（   ）

在划横线处填写正确的读音。