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【简答题】
一 一平行板电容器充电后切断电源。若使两极板间距离增加,则两极板间场强 _______,电容C__________。(选填:增加、不变、减少)
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【单选题】在旧金山、纽约等地人们把华侨、华人聚居的地方叫做“唐人街”,可见唐朝在人们心目中的地位。唐玄宗统治前期,唐朝进入全盛时代,这种盛世景象历史上称为
A.
贞观遗风
B.
开元盛世
C.
贞观之治
D.
开皇之治
【单选题】两栖动物是指（ ）
A.
既能在水中生活，又能在陆地上生活的动物
B.
幼体生活在陆地上，成体生活在水中的动物
C.
幼体生活在水中，成体生活在陆地上或水中的动物
D.
既可在空中，又可在陆地生活的动物
【简答题】阅读理解 Tom and Mike were good friends. Sometimes they were kind to each other, somctimes they were not. But some of their classmates said they were like brothers. One day they went out for a walk togeth...
【简答题】Tom and Mike were good friends. Sometimes they were kind to each other, and sometimes they were not. But all of their classmates said they were like brothers. One day they went out for a walk together...
【单选题】晚唐诗人李商隐在《咏史》一诗中写道:“历览前贤国与家,成由勤俭败由奢”,这是诗人对唐朝由鼎盛走向衰落的感悟。历史上把唐朝鼎盛时期称为()
A.
文景之治
B.
光武中兴
C.
开元盛世
D.
开皇之治
【简答题】They were good friends and never q______ with each other.
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