Recent research has claimed that an
excess of positive ions in the air have an ill-effect on people’s physical or
psychological health. What are positive ions Well, the air is full of ions,
electrically charged particles. But sometimes this balance becomes disturbed and
a larger proportion of positive ions are found. This happens naturally before
thunderstorms, earthquakes or when winds such as the Mistral, Foehn, Hamsin or
Sharav are blowing in certain countries. Or it can be caused by a build-up of
static electricity indoors from carpets or clothing made of man-made fibres, or
from TV sets, duplicators or computer display screens.
When a
large number of positive ions are present in the air many people experience
unpleasant effects such as headaches, fatigue, irritability, and some
particularly sensitive people suffer nause
A. using home-made electric goods.
B. wearing clothes made of natural materials.
C. walking on artificial floor coverings.
D. copying TV programmes on a computer.
更多"{{B}}Text 2{{/B}}
Recen"的相关试题:
[单项选择]{{B}}Text 2{{/B}}
Recent research has claimed that an
excess of positive ions in the air have an ill-effect on people’s physical or
psychological health. What are positive ions Well, the air is full of ions,
electrically charged particles. But sometimes this balance becomes disturbed and
a larger proportion of positive ions are found. This happens naturally before
thunderstorms, earthquakes or when winds such as the Mistral, Foehn, Hamsin or
Sharav are blowing in certain countries. Or it can be caused by a build-up of
static electricity indoors from carpets or clothing made of man-made fibres, or
from TV sets, duplicators or computer display screens.
When a
large number of positive ions are present in the air many people experience
unpleasant effects such as headaches, fatigue, irritability, and some
particularly sensitive people suffer nause
A. They think they are insane.
B. They feel rather bad-tempered.
C. They become violently sick.
D. They are too tired to do anything.
[简答题]Text B
In recent years American society has become increasingly dependent on its universities to find solutions to its major problems. It is the universities that have been charged with the principal responsibility for developing the expertise to place men on the moon; for dealing with our urban problems and with our deteriorating environment; for developing the means to feed the world’s rapidly increasing population. The effort involved in meeting these demands presents its own problems. In addition, this concentration on the creation of new knowledge significantly impinges on the universities’ efforts to perform their other principal functions, the transmission and interpretation of knowledge ---- the imparting of the heritage of the past and the preparing of the next generation to carry it forward.
With regard to this, perhaps their most traditionally sanctioned task, colleges and universities today find themselves in a serious bind generally. On the one hand, there is the
A. A．creating new knowledge
B．providing solutions to social problems
C． making experts on sophisticated industries out of their students
D．preparing their students to transmit inherited knowledge
[单项选择]
{{B}}Questions 11-15{{/B}}
Recent research has claimed that an excess of positive ions in the air can
have an ill effect on people’s physical or psychological health. What are
positive ions Well, the air is full of ions, electrically charged particles,
and generally there is a rough balance between the positive and the negative
charged. But sometimes this balance becomes disturbed and a larger proportion of
positive ions are found. This happens naturally before thunderstorm, earthquakes
when winds such as the Mistral, Hamsin or Sharav are blowing in certain
countries. Or it can be caused by a build-up of static electricity indoors from
carpets or clothing made of man-made fibres, or from TV sets, duplicators or
computer display screens.
When a large number of positive ions
are present in the air many people experience unpleasant effects such a
A. They think they are insane.
B. They feel rather bad-tempered and short-fused.
C. They become violently sick.
D. They are too tired to do anything.
[单项选择] Recent research has claimed that an excess of positive ions in the air have an ill-effect on people’’s physical or psychological health. What are positive ions Well, the air is full of ions, electrically changed particles. But sometimes this balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally before thunderstorms, earthquakes or when winds such as the Mistral, Foehn, Hamsin or Sharav are blowing in certain countries. Or it can be caused by a build-up of static electricity indoors from carpets or clothing made of man-made fibres, or from TV sets, duplicators or computer display screens.
When a large number of positive ions are present in the air many people experience unpleasant effects such as headaches, fatigue, irritability, and some particularly sensitive people suffer nausea or even mental disturbance. Animals are also found to be affected, particularly before earthquakes; snakes have been observed to come out of hibernatio
A. They think they are insane.
B. They feel rather bad-tempered.
C. They become violently sick.
D. They are too tired to do anything.
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