What we know of prenatal development makes all this attempt made by a mother to mold the character of her unborn child by studying poetry, art, or mathematics during pregnancy seem utterly impossible. How could such extremely complex influences pass from the mother to the child? There is no connection between their nervous systems. Even the blood vessels of mother and child do not join directly. An emotional shock to the mother will affect her child, because it changes the activity of her glands and so the chemistry her blood. Any chemical change in the mother’s blood will affect the child for better or worse. But we can not see how a looking for mathematics or poetic genius can be dissolved in blood and produce a similar liking or genius in the child.
In our discussion of instincts we saw that there was reason to believe that whatever we inherit must be of some very simple sort rather than any complicated or very definite kind of behavior。 It is certain that no one inherits a knowledge of mathematics。 It may be, however, that children inherit more or less of a rather general ability that we may call intelligence。 If very intelligent children become deeply interested in mathematics, they will probably make a success of that study。
As for musical ability, it may be that what is inherited is an especially sensitive ear, a peculiar structure of the hands or the vocal organs connections between nerves and muscles that make it comparatively easy to learn the movements a musician must execute, and particularly vigorous emotions。 If these factors are all organized around music, the child may become a musician。 The same factors, in other circumstance might be organized about some other center of interest。 The rich emotional equipment might find expression in poetry。 The capable fingers might develop skill in surgery。 It is not the knowledge of music that is inherited, then nor even the love of it, but a certain bodily structure that makes it comparatively easy to acquire musical knowledge and skill。 Whether that ability shall be directed toward music or some other undertaking may be decided entirely by forces in the environment in which a child grows up。
1。 Which of the following statements is not true?
A. Some mothers try to influence their unborn children by studying art and other subjects during their pregnancy.
B. It is utterly impossible for us to learn anything about prenatal development.
C. The blood vessels of mother and child do not join directly.
D. There are no connection between mother’s nervous systems and her unborn child’s.
2. A mother will affect her unborn baby on the condition that ____.
A。 she is emotionally shocked
B. she has a good knowledge of inheritance
C. she takes part in all kind of activities
D. she sticks to studying
3. According to the passage, a child may inherit____.
A. everything from his mother
B。 a knowledge of mathematics
C。 a rather general ability that we call intelligence
D. her mother’s musical ability
4。 If a child inherits something from his mother, such as an especially sensitive ear, a peculiar structure of the hands or of the vocal organs, he will ____。
A. surely become musician
B。 mostly become a poet
C。 possibly become a teacher
D. become a musician on the condition that all these factors are organized around music
5. Which of the following is the best title for the passage?
A。 Role of Inheritance。 B。 An Unborn Child。
C。 Function of instincts。 D。 Inherited Talents。
Which is safer-staying at home, traveling to work on public transport, or working in the office? Surprisingly, each of these carries the same risk, which is very low。 However, what about flying compared to working in the chemical industry? Unfortunately, the former is 65 times riskier than the latter! In fact, the accident rate of workers in the chemical industry is less than that of almost any of human activity, and almost as safe as staying at home。
The trouble with the chemical industry is that when things go wrong they often cause death to those living nearby。 It is this which makes chemical accidents so newsworthy。 Fortunately, they are extremely rare。 The most famous ones happened at Texas City (1947),Flixborough (1974), Seveso (1976), Pemex (1984) and Bhopal (1984)。
Some of these are always in the minds of the people even though the loss of life was small. No one died at Seveso, and only 28 workers at Flixborough. The worst accident of all was Bhopal, where up to 3,000 were killed. The Texas City explosion of fertilizer killed 552. The Pemex fire at a storage plant for natural gas in the suburbs of Mexico City took 542 lives, just a month before the unfortunate event at Bhopal.
Some experts have discussed these accidents and used each accident to illustrate a particular danger. Thus the Texas City explosion was caused by tons of ammonium nitrate(硝酸铵),which is safe unless stored in great quantity. The Flixborough fireball was the fault of management, which took risks to keep production going during essential repairs. The Seveso accident shows what happens if the local authorities lack knowledge of the danger on their doorstep. When the poisonous gas drifted over the town, local leaders were incapable of taking effective action. The Pemex fire was made worse by an overloaded site in an overcrowded suburb. The fire set off a chain reaction os exploding storage tanks. Yet, by a miracle, the two largest tanks did not explode. Had these caught fire, then 3,000 strong rescue team and fire fighters would all have died.
1。Which of the following statements is true?
A.Working at the office is safer than staying at home.
B。Traverlling to work on public transport is safer than working at the office。
C.Staying at home is safer than working in the chemical industry.
D。Working in the chemical industry is safer than traveling by air。
2.Chemical accidents are usually important enough to be reported as news because ____.
A.they are very rare
B。they often cause loss of life
C。they always occur in big cities
D。they arouse the interest of all the readers
3。According to passage, the chemical accident that caused by the fault of management happened at ____。
A.Texas city B.Flixborough C.Seveso D.Mexico City
4.From the passage we know that ammonium nitrate is a kind of ____.
A.natural gas, which can easily catch fire
B.fertilizer, which can't be stored in a great quantity
C.poisonous substance, which can't be used in overcrowded areas
D。fuel, which is stored in large tanks
5.From the discussion among some experts we may coclude that ____.
A.to avoid any accidents we should not repair the facilities in chemical industry
B。the local authorities should not be concerned with the production of the chemical industry
C。all these accidents could have been avoided or controlled if effective measure had been taken
D。natural gas stored in very large tanks is always safe