问题
单项选择题
关于磁力线说法不正确的是（）。
A.磁力线互不相交
B.磁力线是具有方向性的闭合曲线
C.磁力线沿磁阻最小的路径通过
D.磁力线只能描述磁场的大小而不能描述磁场的方向
答案
参考答案：D
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关于磁力线说法不正确的是（）。
A.磁力线互不相交
B.磁力线是具有方向性的闭合曲线
C.磁力线沿磁阻最小的路径通过
D.磁力线只能描述磁场的大小而不能描述磁场的方向
参考答案：D
Imagine that Mom and Dad have friends over, and you have to talk to adults all evening. Say the thing and the parents might get mad. But, say , and they’ll think you weren’t friendly. So, can you talk with adults? It’s __ __. Just ask them questions about themselves. “Many of them like to talk about what they do for a living,” suggests psychologist Tim Ursiny. Kids can also talk to grown-ups about . Ask what the last good movie they saw was, because people at dinner parties “ ” when the conversation turns to movies, Ursiny says. If a grown-up is Harry Potter, it’s OK to talk about your love for Harry. It’s a(n) __ topic, one that both grown-ups and kids can enjoy, so and talk about whether Dumbledore is really dead. But the topic of video games. “Adults don’t want to hear about your video game they play it,” Ursiny explains. Adults also don’t want to hear slang(俚语). Don’t use language they don’t . Ursiny says kids should learn to speak to other people in their own language. most adults aren’t into slang, they do remember what it was like to be a kid. Ursiny recommends asking adults what __ __ was like when they were your age. “It might be a fun discussion if you your 10th-grade experience with theirs.” you chat with your parents in advance to find out which topics are off-limits (禁区). Also, don’t chat about the things that make your parents feel guilty. Don’t mention stuff such as how Dad has been sleeping on the couch, Ursiny says. And don’t complain that Mom has been late preparing breakfast. , Ursiny says, kids should try to put themselves in their parents’ . Learning how to that type of understanding might help you out in the future. “The most successful people can develop a sympathetic feeling for others,” he says.
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