胚胎期参与造血的器官有（） A.骨髓 B.肝脏 C.胸腺 D.脾脏 E.淋巴结

《办公建筑设计规范》规定，综合楼内的办公部分的()不应与同一楼内对外的商场、营业厅、娱乐、餐饮等人员密集场所的共用。

A.疏散出入口

B.疏散走道

C.疏散楼梯

阅读理解。

     "Climbing Mount Qomolangma is a kind of discovery," said a reporter of CCTV. He was sent to join

the climbing team for broadcasting (播放) this TV program. The climbers climbed Mount Qomolangma

from May 18 to 24. CCTV also sent a team to join in this most dangerous and exciting sport. They called

it "Standing at the World's Third Pole (极) in 2003".

     It is just 50 years since the first climbers got to the top of Mount Qomolangma. In 2003, nearly 600

people from all over the world will try to reach the highest mountain in the world.

     As we know, Mount Qomolangma is famous for its height-8,848 meters-in the world, so it has

attracted thousands of people to climb. On May 25th, 1953, Edmund Hillary from New Zealand, and

Tenzing Norgay from Nepal finally reached the top of Mount Qomolangma. This most dangerous sport

in the world brings the greatest challenge and the most exciting and happiest moment to human beings

because the climbers have to face the terrible cold and avalanches (雪崩), and some other difficulties.

The higher they climb, the more difficulties they will meet. On the way to the top they may lose their lives

at any time. It is reported that 175 climbers had to live there for ever. During the past 50 years, more than

10,000 men and women tried to get to the top, but only 1,200 have made their dreams come true. We

Chinese climbers first showed our national flag to the world on the top of the mountain in 1960. 

     Once someone asked why the pioneers never stopped trying to reach the top. "I don't think climbing

the highest mountain only means danger or death. It is really a chance to challenge. You can really

understand the love of nature and the true meaning of life," a reporter of CCTV answered.

1. How many people succeeded in climbing up to the top of the mountain?[ ]

A. 1,200.

B. 10,000.

C. 175.

D. 600.

2. What may the climbers meet when they climb Mount Qomolangma? [ ]

A. Avalanches, rain, strong wind and the terrible cold.

B. Mist, strong wind, water and falling ice.

C. The terrible cold, avalanches, mist, strong wind and falling ice.

D. Rain avalanches, mist, strong wind and falling ice.

3. When did the Chinese climbing team first stand on the top of Mount Qomolangma? [ ]

A. In 1953.

B. In 1960.

C. In 2003.

D. In 1950.

4. What does the sentence "It is reported that 175 climbers had to live there for ever." mean?

    It means ______. [ ]

A.175 climbers had decided to live there

B. 175 climbers don't want to go back for ever

C. 175 climbers climbed Mount Qomolangma

D. 175 climbers lost their lives

5. What can we learn from the climbers? [ ]

A Their love of nature.

B. Their sprit of meeting the challenge bravely.

C. Their spirit of never giving up.

D. A, B and C.

照样子写词语，写出一个前进一步。

摇摇摆摆→（　　　　）→（　　　　）→（　　　　）

无影无踪→（　　　　）→（　　　　）→（　　　　）

某校进行化学实验考查时，教师给了同学们一小包黑色粉末，这种黑色粉末可能是氧化铜、炭粉或者是两者的混合物，让他们通过实验探究来确定．某同学探究过程如下：

（1）[提出假设]假设1：黑色粉末是炭粉；假设2：______；假设3：______．

（2）[设计实验方案]他对实验做了如下设想和分析：

取少量黑色粉末于烧杯中，加入过量的稀硫酸（稀硫酸与氧化铜反应生成的溶液呈蓝色，与炭不反应），充分反应后过滤．则实验中可能出现的现象与对应结论如下表，请你完成下表．

急性病毒性肝炎时明显增高的酶是（）

A.丙氨酸氨基转移酶（ALT）

B.碱性磷酸酶（ALP）

C.天门冬氨酸氨基转移酶（AST）

D.γ-谷氨酰转移酶（γ-GT）

E.淀粉酶（AMS）