股东从保护自身利益的角度出发，在确定股利分配政策时应考虑的因素有（）。

A crater lake is at the tip of a ______.

A．mountain

B．ridge

C．island

D．volcano

A crater lake is at the tip of a________. 查看材料

A.mountain

B.ridge

C.island

D.volcano

Passage Three

A group of scientists rowing toward the center of a lake saw something shocking. They turned back as fast as they could. What had they seen.？ The lake was boiling!

The group was investigating a crater lake in the mountains of St. Vincent. A crater lake is the mouth of a volcano that has been dormant for some time and has filled with water.

This particular crater was the tip of a volcano called Soufriere, which erupted last in 1902. Since that time, it had not shown any signs of action. But in the fall of 1971, mountain climbers who had hiked near the lake returned to the lowlands with strange stories. They said the water had turned yellow and was giving off a smell like burnt eggs. A seething fog was rising from the lake's surface.

Local scientists rushed to Soufriere to see if this might be the beginning of a new volcanic explosion. They found a huge black mass in the middle of the water. It was a great blob 1,000 feet long and 300 feet wide. Lava had pushed up through the bottom of the lake and formed a new island.

The investigators wanted to make sure that the volcano was safe, and that the lava would not over- flow into the surrounding countryside. But they could never reach the island to study it, because the lava was so hot that the water around it bubbled and boiled.

44. This passage is about ______.

A. mountain climbing

B. a boiling lake

C. a new volcanic island

D. a mysterious blob

根据下面内容，回答题：

A group of scientists rowing toward the center of a lake saw something shocking. They turned back as fast as they could. What had they seen？ The lake was boiling!

The group was investigating a crater lake in the mountains of St. Vincent. A crater lake is the mouth of a volcano that has been dormant for some time and has filled with water.

This particular crater was the tip of a volcano called Soufriere， which erupted last in 1902. Since that time， it had not shown any signs of action. But in the fall of 1971， mountain climbers who had hiked near the lake returned to the lowlands with strange stories. They said the water had turned yellow and was giving off a smell like burnt eggs. A seething fog was rising from the lake"s surface.

Local scientists rushed to Soufriere to see if this might be the beginning of a new volcanic explosion. They found a huge black mass in the middle of the water. It was a great blob 1，000 feet long and 300 feet wide. Lava had pushed up through the bottom of the lake and formed a new island.

The investigators wanted to make sure that the volcano was safe， and that the lava would not overflow into the surrounding countryside， But they could never reach the island to study it， because the lava was so hot that the water around it bubbled and boiled.

This passage is about________. 查看材料

A.mountain climbing

B.a boiling lake

C.a new volcanic island

D.a mysterious blob

Which of the following statements about Lake Nyos and Lake Monoun is true？

A．They were formed in 1984．

B．They are at the top of two active volcanoes．

C．They are not like most other crater lakes．

D．Water in them turns over regularly．

Which of the following statements about Lake Nyos and Lake Monoun is true？

A．They were formed in 1984.

B．They are at the top of two active volcanoes.

C．They are not like most other crater lakes.

D．Water in them turns over regularly.

Which of the following statements about Lake Nyos and Lake Monoun is true？

A．They were formed in 1984.

B．They are at the top of two active volcanoes.

C．They are not like most other crater lakes.

D．Water in them turns over regularly.

Lake Nyos and Lake Monoun explode B．ecause

A．the gases rise to the top and mix with air.

B．people from the villages turn over the water.

C．scientists have put in a computer system.

D．they have more gases trapped at the bottom than other crater lakes.

Lake Nyos and Lake Monoun explode because

A．the gases rise to the top and mix with air.

B．people from the villages turn over the water.

C．scientists have put in a computer system.

D．they have more gases trapped at the bottom than other crater lakes.

Lake Nyos and Lake Monoun explode because

A．the gases rise to the top and mix with air．

B．people from the villages turn over the water．

C．scientists have put in a computer system．

D．they have more gases trapped at the bottom than other crater lakes