我们每天要喝一定的水,这有利于[ ] A.对葡萄糖的吸收 B.对无机盐的吸收 C

题型:选择题

问题:

我们每天要喝一定的水,这有利于[ ]

A.对葡萄糖的吸收

B.对无机盐的吸收

C.废物及时随尿排出

D.肾小管的重吸收 

考点:尿的形成和排出
题型:选择题

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.

题型:选择题

把句子补充完整。

1.__________________摆在眼前。

2.辽阔的版图上那红色的星点是______________。

3.中国像只金鸡昂首在______________。

4.祖国时时在______________。

题型:选择题

(11分)在十字路口,汽车以的加速度从停车线启动做匀加速直线运动,恰好有一辆自行车以的速度匀速驶过停车线与汽车同方向行驶,求:

(1)什么时候它们相距最远?最远距离是多少?

(2)在什么地方汽车追上自行车?追到时汽车的速度是多大?

题型:选择题

关于船舶在渔区的航行和避让,下列说法不正确的是:()

Ⅰ、机动船在航中如发现渔区,应改变航线不得驶入渔船从事捕鱼作业的水域

Ⅱ、一旦进入渔船密集的水域,应以能维持舵效的最低航速行驶

Ⅲ、在渔区行驶应特别注意渔船的动态和其网具伸出的方向,在航机动船不仅应给从事捕鱼的渔船让路,也应给渔区内其他不在从事捕鱼的渔船让路

A.Ⅰ

B.Ⅰ、Ⅱ

C.Ⅱ、Ⅲ

D.Ⅰ、Ⅱ、Ⅲ

题型:选择题

可以进入交易所大厅买卖的是( )

A.所有买者
B.所有卖者
C.正式会员
D.所有人

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