题目内容
Our first moon explorer, Chang'e I satellite(卫星)，________ from the Xichang Launch Center at 6：05 pm on October 24, 2007．
A．took off
B．took out
C．took away
永乾教育寒假作业快乐假期延边人民出版社系列答案Li Weichi, Huang Runling, and Xiao Yan are from Zhongshan Huaqiao Middle School in Guangdong. They have just found a red cabbage that could be a new kind of acid-base indicator (酸碱指示剂). They want it to take the place of litmus (石蕊) paper.
"We've learnt to think of and ask questions about life by ourselves," said Li, "We work well with each other."
British scientist Robert Boyle discovered the use of litmus paper over 300 years ago. Now it is used widely in experiments all over the world.
But when the kids did some experiments in class last winter, they saw that the litmus paper didn’t turn very blue with base matter. It's hard to get a clear result.
Will there be a better indicator than litmus paper? The three kids decided to try and find out!
How? They went to collect over 40 plants in parks, gardens and markets. Then they ground (研磨) leaves, flowers and stems (茎) to get the pigments (色素) from them.
The kids mixed pigments with acid and base. They spent months watching carefully to see which paper showed the best colour change. They decided it was the litmus paper!
"It's our first scientific journey, Huang said, "But it makes me want to try harder."
【小题1】 Whom did the three kids want to challenge?
| A．Their chemistry teacher. | B．Their headmaster. |
| C．Robert Boyle | D．Thomas Edison |
| A．plant | B．animal | C．paper | D．liquid |
| A．red cabbage | B．litmus paper |
| C．any plant | D．any flower |
| A．how to make litmus paper | B．about the three kids' spirit |
| C．scientists were wrong | D．the kids are heroes |
There is no doubt that mothers play an important leading role in the lives of their children. But what about a father's role? I believe that fathers play just as important a role as mothers.
Fathers give us support. They are the shore（岸）we swim to when our arms and legs feel increasingly tired. They are the strength we rely on （依靠）as we take our first steps into the world. Fathers can be gentle and powerful, but they probably have the simplest love we ever know.
_______, the father is their first hero and possibly the only man they will ever feel comfortable loving.
For daughters, the father is the first man they admire and the first man whose eyes shine with happiness when they look at them. He is the first man to fall in love with them.
For mothers, the father of our children is the person we can believe in to watch over the babies as closely as we would. We are protectedin the knowledge of their love. A father is the person on the planet with whom we can do whatever we want ... one who will be just as interested and never feel bored in the face of our devotion.
Without fathers, we wouldn't be mums. I would like to thank them from all our hearts for this honor and for being our partners in the business of raising children.
【小题1】From the passage, we can know the writer is a_______.
| A．father | B．mother | C．son | D．daughter |
| A．For parents. | B．For families. | C．For others. | D．For sons. |
| A．fathers' love is different from mothers' |
| B．fathers are always simple and strong |
| C．fathers can look after their babies better |
| D．fathers are more important than mothers |
| A．Father, I love you | B．Fathers are our heroes |
| C．The importance of fathers | D．Fathers and mothers |