问题 选择题

如图所示,在A点的东、西、南、北方向相同距离处,各有一无限长直线电流,电流大小相同,方向如图,则A点的磁场方向为(  )

A.正北方

B.东南方

C.正东方

D.正南方

答案

由右手螺旋定则可判定通电导线磁场的方向.如图所示,

“⊙”表示电流方向垂直纸面向外,“⊗”表示电流方向垂直纸面向里.

根据矢量的合成,可知,四根直导线电流在A点的磁场方向正南,故D正确,ABC错误;

故选:D

阅读理解

For many students in the UK today, deciding whether or not to go to university can be as much about affordability as it is about ambition and aspiration.

In the past, students in the UK could apply to a university or college. They were sure that even if they came from a low income family, their tuition fees and some of their living (or maintenance) costs would be covered by a local authority grant(拨款). A university education was, in a financial sense, open to all and the number of students attending university grew yearly.

Sadly, it seems, those days are long gone. The turning point came in 1998, when the Labour Government introduced tuition fees of £1,000 a year and, instead of giving students a maintenance grant, asked them to cover their own living expenses with a repayable student loan. Only students on the lowest incomes were entitled to a grant.

The flood gates had been opened. As time passed, the ceiling on tuition fees rose, and although applicants from Scotland, Northern Ireland and Wales still qualified for varying levels of subsidy(补贴), by 2009/10 students in England often found themselves facing tuition fees over£3,000 a year.

In 2011 the Government announced that, from 2012, universities could charge fees of up to £9,000 a year. Although the Government sweetened the pill by stating that postgraduates did not have to begin repaying their student loans until they were earning more than £21,000 a year, the news created over-dissatisfaction. Many students argued that it was unfair that students should have to begin their work life loaded with huge debt, while others complained that the changes would bring back a class divide to university education. These views were reflected in the number of students applying for a university place, which by January 2012 fell by more than 22,000. The Universities Minister, David Willetts, stood by the decision to increase tuition fees, saying that they would not “put universities’ finance on a bearable footing” and that they would accelerate “a stronger focus on high quality teaching.”

小题1:From the first paragraph, we can infer that _____ in attending university.

A.affordability plays more important roles than ambition and aspiration

B.ambition and aspiration are more important than affordability

C.affordability is as important as ambition and aspiration

D.ambition and aspiration make a greater difference小题2:We can put the sentence “But the biggest change was still to come” at the beginning of Paragraph _____.

A.2

B.3

C.4

D.5小题3:The underlined part “sweetened the pill” in the last paragraph possibly means_____.

A.made a sweet pill

B.made the change appear good

C.increased the pill

D.reduced the pill小题4:The writer _____ the change about university education fees.

A.is in favor of

B.is opposed to

C.takes no notice of

D.is neither for nor against

单项选择题