有关纬线和纬度的说法正确的是

Look! The people ____ (swim) in the lake now.

从春分到夏至日，太阳直射点（　　）

如图所示的是“探究电流通过导体产生的热量与什么因素有关”的实验装置，将两根阻值不等的电阻丝R₁、R₂串联后分别放入两个透明容器中，并封闭等量的空气．通电前，A、B两U形管内的液面相平，接通电源1min后，A管中的液面高度较____ ，其中通过R₁、R₂的电流大小分别为I₁、I₂，则I₁____ （填“＞”“＜”或“=”）I₂．

    We high school students do have some growing pains,____ we can get rid of them correctly and wisely. First, some of us are upset ____ their body styles and looks. It's unnecessary and it's not important at all. We needn't care about it. It is one's inner beauty____ matters. Second, we sometimes seem to be misunderstood by our teachers, parents and classmates.____ (face) with this, we can find ____ proper time to have a heart-to-heart talk with them, trying to remove the____(understand). Some of us have fewer in ends. I think being open-minded and friendly____ (do) you good. Third, we may fall behind others,____ makes us stressed. Actually we can encourage ____ to work efficiently, full of determination. Lastly, some of us don't have much pocket money, so they feel unhappy. Isn't it strange? So long as we have some, that's enough. And we can learn ____to spend money.