问题 解答题

按下 * * 种方法,将100元存入银行,10年后的本利和各是多少?(设1年期、3年期、5年期的年利率分别为5.22%,6.21%,6.66%保持不变)

(1)定期1年,每存满1年,将本利和自动转存下一年,共续存10年;

(2)先连续存三个3年期,9年后将本利和转存1年期,合计共存10年;

(3)连续存二个5年期.

答案

设十年后本利用和为x,则:

(1)定期1年,每存满1年,将本利和自动转存下一年,共续存10年;可列方程为:

x=100×(1+5.22%)10

(2)先连续存三个3年期,9年后将本利和转存1年期,合计共存10年;可列方程为:

x=100×(1+6.21%)3×(1+5.22%).

(3)连续存二个5年期.可列方程为:x=100×(1+6.66%)2

单项选择题 A1型题
完形填空

(B)

You might wonder how killer whales are trained and how they learned to perform and (11) their trainer's instructions . The system developed (12) David Butcher, the trainer at Sea World, depends on the (13) that the whales like to have lots of attention . So the trainers (14) the animals lots of attention when they do ( 15 ) they are supposed to and just ( 16 ) pay any attention at all when they (17) . This method has been a great (18) .

Mr Butcher's dream is to help (19) down communication barriers so much that ( 20 ) and animals understand each other (21) . The birth of whales was a (22) in this direction. They are first killer whales to grow up ( 23 ) people. The killer whales have learned (24) people and the other killer whales, and the trainers have learned ( 25 ) about these clever funny - looking animals of the sea .

[    ]11.A.act   B.follow  C.play   D.listen

[    ]12.A.with   B.to   C.from   D.by

[    ]13.A.idea   B.plan  C.demand   D.feeling

[    ]14.A.draw   B.give  C.attract  D.call

[    ]15.A.that   B.which  C.all which   D.what

[    ]16.A.don' t    B.can't  C.have to   D.couldn't

[    ]17.A.do   B.don' t   C.play    D.act

[    ]18.A.correctness   B.success C.truth    D.interest

[    ]19.A.put  B.let   C.turn   D.break

[    ]20.A.he   B.people   C.whales   D.Mr Butcher

[    ]21.A.good    B.clear   C.better   D.right

[    ]22.A.station   B.stop   C.step   D.foot

[    ]23.A.by   B.from   C.like   D.with

[    ]24.A.about      B.on    C.from      D.same

[    ]25.A.from     B.so   C.more  D.same