急性一氧化碳中毒最有价值的诊断指标是（） A.血碳氧血红蛋白浓度 B.血气分析 C.

Big ocean(海洋)fish have almost disappeared from the world since the start of business fishing in the 1950’s．The scientists found that the number of large fish has dropped by 90 percent in the past fifty years．The study took ten years．The researchers collected records from fishing business and governments around the world．The magazine Nature published the findings．

The scientists say the common way called longline fishing is especially harmful to large fish．This way includes many fishing lines that are connected to one boat．If these lines are joined together，they can reach one hundred kilometers．They hold thousands of sharp metal hooks to catch fish．Longline fishing is especially common in the Japanese fishing industry．Records show that Japanese boats used to catch about ten fish for every hundred hooks．The study says longline fishing boats now might catch one fish per hundred hooks．

The scientists say business fishing can destroy groups of fish much faster than in the past．The study suggests that large fish can disappear almost completely from new fishing areas within ten to fifteen years．Ocean life system could be destroyed．

It’s not the only worry that the number of large fish is becoming smaller and smaller．What’s worse．they are smaller in size than their ancestors(祖先)．

小题1:The magazine Nature published the findings．The word“published”here means________．

A．发表

B．发现

C．研究

D．调查小题2:The number of big ocean fish has become smaller because_________．

A．the oceans are polluted

B．the ways of fishing go into practice

C．the scientists pay little attention to them

D．Japanese fishing boats catch one fish per hundred hooks小题3:What do you think of the business fishing?

A．It should be encouraged．

B．It can balance ocean life system．

C．It needn’t be cared about．

D．It may bring harm to ocean fish．小题4:Which of the following can be the best title for the passage?

A．Longline fishing

B．Japanese fishing industry

C．Modem fishing ways

D．Worrying situation of big ocean fish

某街道诊所一天内接诊了3名当地患儿，症状为全身凹陷性水肿，嘴唇轻度青紫，心音稍低钝等。据患儿的母亲介绍患儿经常感冒，爱哭闹，有时还有腹泻、腹胀等症状。经检验发现患儿血红蛋白在80g/L以下，血清蛋白≤30g/L。

调查内容应包括（）

A.周围社区同类患者发病情况

B.母亲营养状况

C.家族患病史

D.喂养情况

E.环境污染

F.既往病史及诊疗情况

法定解除条件包括（）。

A.因不可抗力致使不能实现合同目的

B.在履行期限届满之前，当事人一方明确表示或者以自己的行为表明不履行主要债务

C.当事人一方迟延履行主要债务，经催告后在合理期限内仍未履行

D.当事人一方迟延履行债务或者有其他违约行为致使不能实现合同目的

E.当事人双方意思表示真实

花鹿茸鉴别的术语是

A．门庄
B．朱砂点
C．翻口似盆状
D．通天眼
E．马头蛇尾瓦楞身

液压千斤顶工作时，油不会反向回流，是（）起生作用。

A、溢流阀

B、控制阀

C、双向阀

D、单向阀