如图,电源的内阻不能忽略,当电路中点亮的电灯的数目增多时,下面说法正确的是( )
A:外电路的总电阻逐渐变大,电灯两端的电压逐渐变小
B:外电路的总电阻逐渐变大,电灯两端的电压逐渐不变
C:外电路的总电阻逐渐变小,电灯两端的电压逐渐不变
D:外电路的总电阻逐渐变小,电灯两端的电压逐渐变小
作文:
请以“改变一点点”为题目,写一篇文章。 要求:①文体不限(诗歌除外);②文章不少于600字;③文中不得出现真实的校名及自己的姓名,如需出现,请用“××”代替。
This is my classmate. She's a girl. Her name is Jane. She's twelve years old. She's thin and tall. She has long and black hair. She has two big eyes and a small nose. She has a skirt. It's red. She has a pair of trousers, too. They are red. But her skirt is old. She wants to buy a new skirt. Look, what can she do? Oh, she can skip a rope. This is her rope. It's long. It's blue.
选择合适的搭配。
迎候____ 尽头
止境____ 迎接
敬重____ 敬佩
佩服____ 尊重
下列与人体生长、发育的调节无直接关系的激素是( )