问题 解答题

一件工程,如果甲、乙两人合做,9天可完成;如果乙、丙两人合做,12天可完成.现这项工程共用18天才完成,因为甲只做了3天,乙做了9天,丙从开始坚持到结束.问如果这项工程由甲、乙、丙三人自始至终合作完成,需要多少天?

答案

(1-3×

1
9
-6×
1
12
)÷12

=(1-

1
3
-
1
2
)÷12,

=

1
6
÷12,

=

1
72

1
12
-
1
72
=
5
72

1
9
-
5
72
=
3
72

1÷(

1
72
+
5
72
+
3
72

=1÷

1
8

=8(天).

答:如果这项工程由甲、乙、丙三人自始至终合作完成,需要8天.

完形填空
People around the world celebrate the new year. However, not all countries celebrate in the   46   way. When it is the New Year, people celebrate for several days. In some countries, the New Year is not on the same date every year. It can depend    47   the seasons, the moon or the sun.
In many countries, New Year begins on January1st, but people start celebrating on December 31st, New Year’s Eve. In New York, many people go to celebrate in Times Square. While they’re waiting for the New Year, they    48   music, sing traditional songs and have fun. Just before 12 o’clock, everyone    49   down from 10, 9, 8 … As soon as it’ s 12 o’clock, everyone shouts very loudly, “Happy New Year!” and they say, “Out with the old year and in with the new!” Suddenly there    50  fireworks and special drinks. Sometimes people sing an old song   51  “Auld Lang Syne”.
New Year’s Day is often a family day. Some people relax at home. Some families get together for a special    52  with grandparents, aunts and uncles. When the weather is    53  , many families go out for a walk.
On New Year’s Day, many people make resolutions for the new year. They write down a list of things, such as “I will help out more at home. I will work harder at school.”
Or “I won’t spend so much time    54  video games.” When they have made their list, they read it to their family or friends.
So it does not matter how they celebrate, for people in countries all over the world, it is a time to    55  goodbye to the old year, and to welcome the new.
小题1:
A.differentB.difficult C.same D.easy
小题2:
A.inB.onC.forD.like
小题3:
A.hear B.listen to C.sound D.hear of
小题4:
A.countsB.countC.countedD.counting
小题5:
A.am B.isC.beD.are
小题6:
A.calls B.callingC.called D.call
小题7:
A.mealB.breakfast C.lunch D.supper
小题8:
A.well B.goodC.hotD.fine
小题9:
A.playB.playing C.playedD.plays
小题10:
A.sayB.tell C.talkD.speak
问答题 简答题