五道 英语 单选题1 whoever invented___wheel is believed to have a mo

五道 英语 单选题
1 whoever invented___wheel is believed to have a most useful information in____history
A a;// B the,the C the,// D a; the
2 High interest rates ___ people from borrowing money.
A discourage B reject C motivate D disturb
3____ its low cost,the appeal of iron as a building material lies in its as strengh,and is resistance to free
A other than B apart from C except for D less than
4 Miss Wang got the first prize in the singing competition last week,that's what she ___ for years.
A had been expecting
B has expected
C expected
D has been expecting
25 Eating sweets before meals is considered to have the chance to spoil the ___
A passion B appietiate C atmosphere D outcome
麻烦每道题顺便简单讲下原因