"Establishment of relationship Personal" belongs to （)

Discouraging the use of plastic belongs to the second type of energy conservation.

A．Y

B．N

C．NG

A、Banqiangti

B、Qupaiti

C、Erhuang

D、Zhugongdiao

A、romanticism

B、realism

C、critical realism

D、naturalism

Which of the following belongs to "intervening obstacles"?

A．Severe famine.

B．Personal factors.

C．Presence of fellow countrymen.

D．Finding a suitable job.

Perhaps the most familiar plant movement belongs to one species of mimosa called the sensitive plant. Within seconds, it can lower its leaves and make its tiny leaflets close up like folding chairs. This movement is thought to be initiated by electrical impulses remarkably similar to nerve signals in animals. But without the animals' sophisticated motion machinery, the mimosa has had to be creative in devising a way to move. For motion, the plant depends on tiny, bulb-shaped organs located at the base of each leaf stalk and leaflet. Called pulvini, these organs hold the plant parts in place. When the mimosa is stimulated--say, by a crawling insect or a sudden change in temperature--an electrical impulse sweeps through the plant. This causes potassium and then water to be shifted from certain cells in the pulvini to others, quickly turning one side of the organs flaccid. Because the pulvini can no longer support the leaves and leaflets, this shift results in a corresponding change in their position.The passage is mainly concerned with the ______.A.geographical distribution of plant and animal speciesB.location and purpose of the pulviniC.appearance of the mimosaD.process that causes movement in the mimosa

Perhaps the most familiar plant movement belongs to one species of mimosa called the sensitive plant. Within seconds, it can lower its leaves and make its tiny leaflets close up like folding chairs. This movement is thought to be initiated by electrical impulses remarkably similar to nerve signals in animals. But without the animals' sophisticated motion machinery, the mimosa has had to be creative in devising a way to move.

For motion, the plant depends on tiny, bulb-shaped organs located at the base of each leaf stalk and leaflet. Called pulvini, these organs hold the plant parts in place. When the mimosa is stimulated—say, by a crawling insect or a sudden change in temperature—an electrical impulse sweeps through the plant. This causes potassium and then water to be shifted from certain cells in the pulvini to others, quickly turning one side of the organs flaccid. Because the pulvini can no longer support the leaves and leaflets, this shift results in a corresponding change in their position.

The passage is mainly concerned with the ______.

A．geographical distribution of plant and animal species

B．location and purpose of the pulvini

C．appearance of the mimosa

D．process that causes movement in the mimosa

Perhaps the most familiar plant movement belongs to one species of mimosa called the sensitive plant. Within seconds, it can lower its leaves and make its tiny leaflets close up like folding chairs. This movement is thought to be initiated by electrical impulses remarkably similar to nerve signals in animals. But without the animals' sophisticated motion machinery, the mimosa has had to be creative in devising a way to move.

For motion, the plant depends on tiny, bulb-shaped organs located at the base of each leaf stalk and leaflet. Called pulvini, these organs hold the plant parts in place. When the mimosa is stimulated--say, by a crawling insect or a sudden change in temperature--an electrical impulse sweeps through the plant. This causes potassium and then water to be shifted from certain cells in the pulvini to others, quickly turning one side of the organs flaccid. Because the pulvini can no longer support the leaves and leaflets, this shift results in a corresponding change in their position.

The passage is mainly concerned with the ______.

A．geographical distribution of plant and animal species

B．location and purpose of the pulvini

C．appearance of the mimosa

D．process that causes movement in the mimosa

From the passage we can infer that real happiness of life belongs to those ______ .

A．who are at the bottom of the society

B．who are higher up in their social status

C．who prove better than their fellow-competitors

D．who could keep far away from this competitive world

From the passage we can infer that real happiness of life belongs to those ______ .

A．who are at the bottom of the society

B．who are higher up in their social status

C．who prove better than their fellow-competitors

D．who could keep far away from this competitive world

From the passage we can infer that real happiness of life belongs to ______.

A．workers and employers

B．higher up in their social status

C．better fellow-competitors

D．those who could keep far away from this competitive world