促胃液素产生于（） A.主细胞 B.壁细胞 C.黏液细胞 D.G细胞

早产儿胎龄32周，出生体重1600克，生后5小时出现进行性呼吸困难，入院时呼吸不规则，经皮氧饱和度为75%。最可能的诊断为（）

A.湿肺

B.胎粪吸入综合征

C.新生儿肺透明膜病

D.衣原体肺炎

E.持续性肺动脉高压

GUATEMALA CITY（Reuters）---- A fish that lives in mangrove swamps（红树沼泽）across the Americas can live out of water for months at a time, similar to how animals adapted（适应）to land millions of years ago, a new study shows.

The Mangrove Rivulus, a type of small killifish, lives in small pools of water in a certain type of empty nut or even old beer cans in the mangrove swamps of Belize, the United States and Brazil. When their living place dries up, they live on the land in logs（圆木）, said Scott Taylor, a researcher at the Brevard Endangered Lands Program in Florida .

The fish, whose scientific name is Rivulus marmoratus, can grow as large as three inches. They group together in logs and breathe air through their skin until they can find water again.

The new scientific discovery came after a trip to Belize.

“We kicked over a log and the fish just came crowding out,” Taylor told Reuters in neighboring Guatemala by telephone. He said he will make his study on the fish known to the public in an American magazine early next year.

In lab tests, Taylor said he found the fish can live up to 66 days out of water without eating.

Some other fish can live out of water for a short period of time. The walking catfish found in Southeast Asia can stay on land for hours at a time, while lungfish found in Australia, Africa and South America can live out of water, but only in an inactive state. But no other known fish can be out of water as long as the Mangrove Rivulus and remain active, according to Patricia Wright, a biologist at Canada’s University of Guelph.

Further studies of the fish may tell how animals changed over time.

“These animals live in conditions similar to those that existed millions of years ago, when animals began making the transition（过渡）form water onto land, ” Wright said.

小题1:The Mangrove Rivulus is a type of fish that ________.

A．likes eating nuts

B．prefers living in dry places

C．is the longest living fish on earth

D．can stay alive for two months out of water小题2:Who will write up a report on mangrove Rivulus?

A．Patricia Wright.

B．Researchers in Guatemala.

C．Scientists from Belize.

D．Scott Taylor.小题3:According to the text, lungfish can __________.

A．breathe through its skin

B．move freely on dry land

C．remain alive out of water

D．be as active on land as in water小题4:What can we say about the discovery of Mangrove Rivulus?

A．It was made quite by accident.

B．It was based on a lab test of sea life.

C．It was supported by an American magazine.

D．It was helped by Patricia Wright.

某混凝土工程按计划12天完成，下图中标出了截止第7天末的实际施工时间，从图中可以看出（）。

A.该工作实际开始时间比计划开始时间晚2天

B.第5天末实际进度比计划进度拖后3％

C.第4天内计划完成的任务量为12％

D.第7天内实际进度比计划进度拖后5％

沙棘的果实类型为（）

A.坚果

B.核果状

C.浆果状

D.蒴果

胬肉侵入角膜近瞳孔区时首先考虑的治疗方法（）

A.射线照射

B.手术切除

C.局部滴眼液

D.局部涂眼膏

E.局部应用丝裂霉素C