问题 填空题

一个表面积50平方厘米的圆柱体,底面积是15平方厘米,把2个这样的圆柱体拼成一个大圆柱体,这个大圆柱体的表面积是______平方厘米.

答案

圆柱的侧面积:

50-15×2,

=50-30,

=20(平方厘米);

大圆柱的表面积:50+20=70(平方厘米);

答:这个大圆柱的表面积是70平方厘米.

故答案为:70.

阅读理解
阅读理解。
    Children in England mustn't work until they are 13. They need to have a work permit (许可)
to start working.
The jobs teenagers can doThe hours teenagers (13 and 14 year olds)
can work
    Delivering (送) newspapers
    Many teenagers will get up early to deliver
newspapers to houses in their local area before
going to school.They are known as Paperboys
or Papergirls.
    Babysitting
    Looking after young children in their home
while their parents have gone out for the evening
is a popular job for teenagers, as they get money
for watching children and television all at the
same time!
    Helping the Milkman
    From the age of 14 some teenagers help the
milkman deliver milk to houses. Other popular
jobs Working in a shop; Office work; Washing
cars; In a cafe or restaurant.
    School Days
    Not more than 2 hours in one day
during the following periods:
    Morning: 7 a.m.- start of school
    Evening: close of school-7 p.m.
    Saturdays: Up to 5 hours between
7 a.m.and 7 P.m. 
    Sundays: Up to 2 hours between
7 a.m.and 11 a.m.
    Term time: Up to 12 hours a week
(Including weekends)




1.In England how old do children have to be before they can work?
[ ]
A.15
B.14
C.10
D.13
2.Paperboys and Papergirls deliver newspapers ______.
[ ]
A.early in the morning
B.at noon
C.in the afternoon
D.in the evening
3.Teenagers in England can do all of the following except ______.
[ ]
A.work in an office
B.work in a night club
C.look after young children
D.deliver newspapers
4.How many hours a week many teenagers work during the term time?
[ ]
A.10
B.14
C.17
D.20
单项选择题 案例分析题