________I have to sell my house, I'll keep my business going.
A:Even as
B:Even though
C:Even so
D:As though
如图所示,环形导线中通有顺时针方向的电流I,则该环形导线中心的磁场方向为( )
Excuse me for breaking in, ________ I have some good news to tell you.
2012年是威海市实施校安全工程4年规划的收官年,截止4月底,全市已开工项目39个,投入资金0.50亿元,请将0.50亿精确到____,0.50亿元用科学记数法表示____元.