下列结缔组织病中，最易并发恶性肿瘤的是（） A.系统性红斑狼疮 B.皮肌炎 C.系统

Caroli病又称为

A．硬化性胆管炎

B．多发肝囊肿

C．先天性肝内胆管囊肿

D．多囊肝

E．慢性胆囊炎

下列不属于产生测量误差原因的是（）。

A.仪器误差

B.观测者的影响

C.旁观者的影响

D.周围环境的影响

阅读理解。

     Monday: Here I am, in the middle of nowhere. This camping trip idea is not getting off to a very good

start. It's raining and the tent leaks. The hiking seemed to take forever, and I still can't understand how it

could all have been up hill! How did I ever let my brother talk me into this? When we get home-if we ever

get home-he's going to have to do something great to get back on my good side. Maybe he should sponsor

a shopping spree (狂购) at the mall!

     Tuesday: Things are looking up. The sun came out today, so we were able to leave the tents and dry

out. We're camped at the edge of a small lake that I couldn't see before because of the rain and fog. The

mountains are all around us, and the forest is absolutely beautiful. We spent most of the day dragging out

everything out of our backpacks or tents and putting it where the sun could dry it out. Later in the afternoon

we tried to catch the fish for dinner, but the fish were smarter than we were. At night we built a fire and

sang songs happily.

     Wednesday: We hiked to the far side of the lake and climbed to the top of a small peak. From there we

could see how high the other mountains were and how far the forest spread around us. On the way up we

passed through a snowfield!

     Thursday: I caught my first fish! We followed the stream that fed the lake. After about two miles, we

came to a section that Carol said looked "fishy". She had a pack rod (竿), which can be carried in a backpack.

I asked to cast it, and I caught a fish on my first try. Carol caught a few more. But they were just too pretty

to eat for lunch, so we put them back in the stream.

     Friday: I can't believe we are going home already. It will be nice to get a hot shower, sleep in a real bed,

and eat junk food, but the trip has been wonderful. We're already talking about another camping adventure

next year where we canoe down a river. It's hard to believe, but I think this city girl has a little country

blood in her veins.

1. The writer went on this camping trip because _____.

A. she enjoyed camping

B. she wanted to go fishing

C. she was influenced by her brother

D. she was tired of staying home

2. The whole morning of Tuesday, the writer _____.

A. hiked along the lake

B. dried out her belongings

C. climbed the mountain

D. caught the fish for dinner

3. It can be inferred that Carol had a pack rod with her because _____.

A. she could not afford to buy a regular fishing pole

B. she needed it to get their main source of food

C. she thought the writer of the journal might need it

D. she expected to go fishing while they were hiking

4. It is likely that the writer will _____.

A. go on another camping trip

B. invite Carol to go fishing together

C. make her brother buy her something

D. convince her brother to go camping

给水泵为什么设入口压力低保护？

催化剂撇头过程中，如发现器内催化剂发生自燃，应立刻（）。

A、向器内喷水

B、向器内投入大量干冰

C、床层通大量氮气

D、通入大量蒸汽