包含不同期限的债券投资组合直接使用加权平均收益率（）准确反映该投资组合的真实价值。A

胸腺是T细胞发育的重要中枢器官，胸腺由_____________、______________组成。

阅读理解

     If this 13year old American boy succeeds in climbing Mount Everest,he has modest ambitions-pick a

small piece of rock from the top as a memento (纪念品) and wear it in a necklace.

     "It is something for myself to say 'this is a rock from the top',"Jordan Romero from California,told

reporters in Kathmandu.He left for the mountain on Sunday.

     If he succeeds,Romero will become the youngest climber to climb the 8,850 meters Everest Summit.

Currently a 16yearold Nepali boy,Temba Tsheri Sherpa,holds the record of being the world's youngest

climber of Mount Everest.

     But Romero,sitting over lunch with his climbing father and stepmother in Kathmandu's tourist district

of   Thamel,said he was not after setting climbing records.

     Romero said Mount Qomolangma,that runs across NepalChina border,was part of his goal to climb

the highest mountains on all seven continents.

     "It is just a goal," he said confidently."If I don't succeed I am okay.I will try again."

     Romero has already climbed Mount Kilimanjaro in Africa and Mount McKinley in Alaska among

others.

     Romero's father Paul said the boy was ready to take on the climb and understood the risk of climbing

the giant mountain.

     "I know it requires a lot of patience.I will remain patient.I want to stay safe and make right choice,"

Romero said of his climb using the northeast ridge (山脊) route on the Chinese side of the mountain.

     Over 4,000 climbers have reached the top of Mount Qomolangma since it was first climbed by New

Zealander Sir Edmund Hillary and Nepal's Tenzing Norgay Sherpa in 1953.Romero said he wanted to

climb the highest mountains in all 50 states in the US next."It does not need to be after Qomolangma and

could be in between."

1. According to the passage,at present________keeps the record of being the world's youngest

    climber of Mount Everest.

A. Jordan Romero  

B. Temba Tsheri Sherpa

C. Tenzing Norgay Sherpa  

D. Sir Edmund Hillary

2. From the passage we can learn that Romero's goal is________.

A. to break the record of the youngest climber to climb Everest Summit

B. to pick a small piece of rock from the top of Everest Summit

C. to climb the highest mountains on all seven continents

D. to climb the highest mountains in all 50 states in the US

3. We can infer from the passage that________.

A. Romero has made a promise that he must climb up the top of Mount Qomolangma

B. the highest mountain in America is Mount Kilimanjaro

C. Sir Edmund Hillary and Tenzing Norgay Sherpa come from different countries

D. there is no risk climbing Mount Qomolangma

4. The following statements are true EXCEPT________.

A. Romero is to use the northwest ridge route on the Chinese side of the mountain

B. Romero has his patience and understands the risk of climbing the giant mountain

C. Romero has made a safe climbing plan

D. Romero is fond of climbing

下列行为中，属于统计违法行为的有()。

A.自行修改统计资料、编造虚假数据

B.伪造、篡改统计资料

C.违反国家有关规定，造成统计资料毁损、灭失

D.提供不真实或者不完整的统计资料

E.非法提供、泄露在统计调查中获得的能够识别或者推断单个统计调查对象身份资料

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