[单项选择]

{{B}}TEXT C{{/B}}

Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty and dedicated to the proposition that all men are created equal.
Now we are engaged in a great civil war, testing whether that nation or any nation so conceived and so dedicated, can long endure. We are met on a great battle-field of that war. We have come to dedicate a portion of the field, as a final resting place for those who here gave their lives that that nation might live. It is altogether fitting and proper that we should do this. But, in a larger sense, we can not dedicate--we can not consecrate, we can not hallow--this ground. The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. The world will little note, nor long remember what we say here, but it can never forget what they did here. It is for us the living, rather, to be ded
A. Devotion to the cause.
B. Honored death.
C. The birth of freedom.
D. The last full measure of devotion.

[简答题] Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal.
Now we are engaged in a great civil war, testing whether that nation or any nation so conceived and so dedicated, can long endure. We are met on a great battle field of that war. We have come to dedicate a pgr tion of the field, as a final resting place for those who gave their lives that that nation might live. It is alto gether fitting and proper that we should do this.
But, in a larger sense, we can not dedicate--we can not consecrate --we can not hallow --this ground. The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. The world will little note, nor long remember what we say here, but it can never forget what they did here. It is for us the living, rather, to be dedicated here to the unfinished work which

[单项选择]
Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty and dedicated to the proposition that all men are created equal.
Now we are engaged in a great civil war, testing whether that nation or any nation so conceived and so dedicated, can long endure. We are met on a great battle-field of that war. We have come to dedicate a portion of the field, as a final resting place for those who here gave their lives that that nation might live. It is altogether fitting and proper that we should do this. But, in a larger sense, we can not dedicate--we can not consecrate, we can not hallow--this ground. The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. The world will little note, nor long remember what we say here, but it can never forget what they did here. It is for us the living, rather, to be ded
A. Forty-seven years ago.
B. Eighty-seven years ago.
C. Twenty-eight years ago.
D. One hundred and seven years ago.

[简答题]{{U}} Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that all men are created equal.{{/U}} {{U}}Now we are engaged in a great civil war, testing whether that nation or any nation so conceived and so dedicated, can long endure. We are met on a great battle field of that war. We have come to dedicate a pgr tion of the field, as a final resting place for those who gave their lives that that nation might live. It is alto gether fitting and proper that we should do this.{{/U}} {{U}}But, in a larger sense, we can not dedicate--we can not consecrate --we can not hallow --this ground. The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. The world will little note, nor long remember what we say here, but it can never forget what they did here.{{/U}} It is for us the living, rather, to be dedicated here to the unfinished work

[简答题]{{U}}Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in Liberty, and dedicated to the proposition that al] men are created equal.{{/U}} {{U}}Now we are engaged in a great civil war testing whether that nation or any nation so conceived and so I dedicated ,can long endure. We are met on a great battle field of that war. We have come to dedicate a portion of the field, as a final resting place for those who gave their lives that that nation might live. It is altogether fitting and proper that we should do this.{{/U}} {{U}}But, in a larger sense, we can not dedicate--we can not consecrate --we can net hallow --this ground. The brave men, living and dead. who struggled here, have consecrated it ,far above our poor power to add or detract. The world will little note .nor long remember what we say here ,but it can never forget what they did here.{{/U}} It is for us the living, rather, to be dedicated here to the unfinished work whic

[单项选择]
Seven years ago, an Environmental Protection Agency statistician stunned researchers studying the effects of air pollution on health when he reported analyses indicating that as many as 60, 000 U. S. residents die each year from breathing federally allowed concentrations of airborne dust. This and subsequent studies figured prominently in EPA’s decision last year to ratchet down the permitted concentration of breathable particles in urban air -- and in human airways.
At the time, many industrialists argued that they shouldn’t have to pay for better pollution control because science had yet to suggest a plausible biological mechanism by which breathing low concentrations of urban dust might sicken or kill people.
Now, scientists at the University of Texas Houston Health Science Center describe how they uncovered what they think may be one of the basic elements of that toxicity.
On the alert for for
A. how inhaled dust harms the lungs
B. the function of Environmental Protection Agency
C. the function of human alveolar macrophages
D. studies by Environmental Protection Agency

[单项选择]Seven years ago, an Environmental Protection Agency statistician stunned researchers studying the effects of air pollution on health when he reported analyses indicating that as many as 60,000 U.S. residents die each year from breathing federally allowed concentrations of airborne dust. This and subsequent studies figured prominently in EPA’s decision last year to ratchet down the permitted concentration of breathable pm-tides in urban air -- and in human airways.
At the time, many industrialism argued that they shouldn’t have to pay for better pollution control because science had yet to suggest a plausible biological mechanism by which breathing low concentrations of urban dust might sicken or kill people.
Now, scientists at the University of Texas Houston Health Science Center describe/how they uncovered what they think may be one of the basic elements of that toxicity.
On the alert for foreign debris, a community of white blood cells known as alveolar macrophages pat
A. Airborne dust may trigger suppressor macrophage suicides.
B. Airborne dust may trigger stimulatory macrophage suicides.
C. The ratio of suppressor macrophages to stimulatory ones in people with lung diseases is much higher than that in people with healthy lungs.
D. Only stimulatory macrophages show responses to airborne dust.