阅读理解。
A fish that lives in America can live out. of water for months at a time, similar to how animals got used
to land millions of years ago, a new study shows.
The Mangrove Rivulus, a kind of little fish, lives in small pools of water. When their living place dries up,
they live. on the land, said Scott Taylor, a researcher in Florida.
The fish can grow as large as three inches. They group together and breathe air through their skin before
they can find water again.
The new scientific discovery came during a trip.
"We were travelling for fun. and one day I kicked over a log (圆木) and the fish came out," Taylor told
reporters by telephone. He said he would 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 (肺鱼) found in Australia, Africa and South America
can live out of water, but only in a not active (活波的) way. But no other known fish can be out of water as
long as the Mangrove Rivulus and keep active, according to Patricia Wright, a biologist at a Canadian
University.
More studies of the fish may tell how animals changed over time.
"These animals live in conditions similar to those millions of years ago, when animals began to move from
water onto land," Wright said.
1. The Mangrove Rivulus is a type of fish that _____.
A. lives on land in Africa
B. can stay alive for months out of water
C. prefers living in dry places
D. is the longest living fish on earth
2. Who will write a report on Mangrove Rivulus?
A. Scott Taylor.
B. Some reporters.
C. Patricia Wright.
D. Scientists from Europe.
3. According to the passage, lungfish can _____.
A. breathe through its skin
B. be found in Asia
C. keep alive out of water
D. keep alive and walk on land
4. Which one of the sentences below is not true?
A. The Mangrove Rivulus fish can live out of water as long as other animals if it has something to eat.
B. Millions of years ago, animals began to live onto land from water.
C. Lungfish found in Australia, Africa and South America can live out of water in a not active way.
D. The walking catfish found in Southeast Asia can stay on land for hours at a time.
5. What can we say about the discovery of Mangrove Rivulus?
A. ft was made by Scott Taylor, a researcher in New York.
B. It was helped by an American magazine.
C. It was helped by Patricia Wright.
D. It was made by a researcher while travelling.
N2O4（g），增大压强，混合气体的浓度增大，平衡体系颜色变深，该反应正反应为体积减小的反应，增大压强平衡正反应移动，二氧化氮的浓度又降低，颜色又变浅，所以可以用平衡移动原理解释；B、存在平衡2SO2+O2（g）
2SO3（g），正反应为气体体积减小的反应，增大压强，平衡向正反应移动，有利于合成SO3，能用平衡移动原理解释；C．存在平衡H2+I2（g）