家庭记账与预算应掌握的重要原则，下列叙述正确的是（）。
Ⅰ.记账科目与预算科目应该要一致才能做比较
Ⅱ.家庭会计一般都适用应计基础来记账，比较省时方便
Ⅲ.信用卡若刷卡时记支出，在资产负债表上同时显示应付款
Ⅳ.以市价计算的资产负债表，期初与期末净值的差异等于当期储蓄
A.Ⅰ、Ⅱ
B.Ⅰ、Ⅲ
C.Ⅱ、Ⅳ
D.Ⅱ、Ⅲ
参考答案：B
解析：
Ⅱ项家庭记账一般用现金基础；Ⅳ项应是以成本计算的资产负债表，期初与期末净值的差异等于当期储蓄。
To this day,I still remember the first day of classes exactly 30 years ago. I _16_ in Dr Charles E. Offutt’s British literature class，listening to him _17_ what his seniors would learn and get them excited about the journey they would __18__ .I’m the principal(校长) of the school now，but for a few minutes I was back in 1975，__19__ what the future held. I have been learning from Dr Offutt for 30 of the 51 years he has been teaching at DeMatha. he not only taught me to think，he _20_ me，as much by example as _21__，that it was my moral duty to do so and to serve __22_ . Neither of us could know how our _23_ would develop over the years. When I first came back to DeMatha to teach English，I worked for Dr Offutt，then the department chair. After several years，I was _24__ department chair，and our relationship changed __25__. I thought that it might be __26__chairing the department，since all of my former English teachers were still there，but Dr Offutt _27__ me throughout. he knew when to give me _28__ about curriculum(课程)，texts and personnel，and when to let me design my own course. In 1997，I needed his advice about leaving DeMatha to become principal at another school. If he had asked me to stay at DeMatha，I might have. _29_，he encouraged me to seize the new __30_ . Five years ago,I became the__31_ of DeMatha. Once again, Dr Offutt was there for me,Letting me know that I could__32_ on him as I tried to fill such big shoes.I’ve learned that great teachers have a (an)___33__wealth of lessons to teach __34_ his students don’t know it yet.I know how __35_ they are.I’m still one of them.
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发生α衰变，已知α粒子的速度方向垂直于磁感线，并测得α粒子的运动轨道半径为R，则反冲核的运动半径为（ ）
