下列各句中划线的词语在文中的意义与现代汉语相同的一项是( )
A:秦自缪公以来二十余君,未尝有坚有约束者也。
B:璧有瑕,请指示王。
C:宣言曰:“我见相如,必辱之!”
D:臣以为布衣之交尚不相欺。
① What are you doing? ____ A. No,she isn't.
② What is your mum doing? ____ B. Yes I am.
③ Can I use your pen? ____ C. I'm cleaning my room.
④ Is Sarah reading a book? ____ D. She is cooking fish.
⑤ Are yoy doing homework? ____ E. Sure.
在倾角为θ的光滑斜面上,放置一通有电流I、长L、质量为m的导体棒,如图所示,
试求:
I am happy that we have ______ fine weather.