问题 单项选择题

针对地球冰川的研究发现,当冰川之下的火山开始喷发后,会快速产生蒸汽流,爆炸式穿透冰层,释放灰烬进入高空,并且产生出沸石、硫化物和黏土等物质。日前人们发现,在火星表面的一些圆形平顶山丘也探测到这些矿物质,并且广泛而大量地存在。因此,人们推测火星早期是覆盖着冰原的,那里曾有过较多的火山活动。 要得到上述结论,需要补充的前提是()

A.近日火星侦察影像频谱仪发现,火星南极存在火山

B.火星地质活动不活跃,地表地貌大部分形成于远古较活跃的时期

C.沸石、硫化物和黏土这三类物质是仅在冰川下的火山活动后才会产生的独特物质

D.在火星平顶山丘的岩石中发现了某种远古细菌,说明这里很可能曾经有水源

答案

参考答案:C

填空题
阅读理解

Farah was sitting in the kitchen going over the party list with her mother. The exams were over and Farah wanted to invite her friends for a party.

“Farah, aren’t you going to invite Hafsa?” her mother asked. Hafsa had been her best friend since childhood.

“Mother, you know I am now a part of Purple Girls Club and we have some rules about people we can be friends with,” Farah answered.

“Really? And what are the rules?” her mother asked.

“Well, only very pretty girls can be part of our group. And Hafsa is so…you know …dark.”

“I cannot believe it,”her mother said angrily.

As Farah left the kitchen, her father called her from the living room.

Farah went to her father and paled when she saw the exam report in his hands. “Farah, what has happened to your grades? You have failed in Mathematics,” her father said.

Farah had no answer. The truth was that the activities of Purple Girls Club left her with very little time for studies.

“Farah,  it says that you can take part in supplementary exams(补考). If your grades don’t improve then, I’ll cancel(职消)your trip to Spain.”

Farah went to her room and called Gina, the leader of Purple Girls Club. “Gina, can you help me to complete my notes before the exams?”

Gina laughed. “Exams? Who cares about exams?”

One by one, she called her friends in the club but no one seemed to care or wanted to help.

Farah knew Hafsa would help her. Farah also knew Hafsa had been hurt by her, but Hafsa said, “If you need any help, just let me know. We can study together till your exams.”

Next Monday, as two friends entered the school together, Gina called out.

“Farah, you know our rules. You cannot be friends with those who do not belong to our club.”

“Gina, I have a new rule about friendship,” Farah replied.

小题1:After Farah became a member of Purple Girls Club, she chose a friend according to a person’s      .

A.looks

B.usual activities

C.grades

D.favorite colors小题2:Farah became pale after going to her father because    .

A.he didn’t allow her to go to Spain

B.she didn’t do well in her exams

C.she had to leave Purple Girls Club

D.he asked her to improve her grades小题3:.Which word can best describe Hafsa?

A.Silly

B.Beautiful

C.Rude

D.Kind小题4:From the passage, we can know that        .

A.Hafsa is a member of Purple Girls Club

B.Gina will help Farah with her exams

C.Gina doesn’t care about exams

D.Farah would like to invite Hafsa to the party小题5:What lesson can we learn from the passage?

A.A friend in need is a friend indeed.

B.A perfect friend will never be found.

C.Be slow in choosing a friend.

D.Friendship can be developed easily.