按计划修建一段公路，当完成了任务的34时，由于使用上了新设备，_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题填空题

按计划修建一段公路，当完成了任务的

3

4

时，由于使用上了新设备，修建速度提高了50%，同时为了维修保养新设备，每天修建时间减少了

1

4

，结果共用了70天完成任务，则原计划用______天完成任务．

答案

上新设备后的工作效率：

（1+50%）×（1-

1

4

），

=150%×

3

4

，

=

9

8

，

70÷（

3

4

+

1

4

×

8

9

），

=70÷（

3

4

+

2

9

），

=70÷

35

36

，

=72（天），

答：原计划用72天完成任务．

故答案为：72．

完形填空

完形填空（本大题有10小题，每小题1分，共10分）
Do you like to visit the zoo in our city? Zoo is a good place ___(16)____. There is a zoo ____(17)___a river and a small mountain. It’s very big and there are a lot of tall trees in it. We can see a lot of golden fish(金鱼) in it, they have all kinds of ____(18)_____ . Some are red, some are yellow, some are white and some are black. They are swimming in the water. And they are very _____(19)_____.
We can see a hill. About twenty ____(20)____ are playing on it. Some are asking people for ____(21)_____. The little monkeys are in their mothers’ arms. They are very interesting and children_____(22)_____ them very much. We can also see the elephants. They are very strong(强壮的). The ____(23)_____are very tall. The pandas’ house is next to the monkey hill. There are ____(24)___ pandas ---one is sitting in the trees and the other is sleeping on the grass. They look very shy and cute. What ___（25）___ animals do you like？
小题1: A has fun B. have fun C. have a fun D. to have fun

填空题

下列程序的输出结果是______。
#include＜stdio.h＞
main()
intx=10,y=10,i;
for(i=0;x＞8;y=++)
printf("%d%d",X--,y);