A、30
B、32
C、34
D、36
A、4000 to 5000
B、3000 to 4000
C、2000 to 3000
D、1000 to 2000
The following is academic writing. Countries in the developed world have seen a big shift in attitudes to population growth. Several generations ago, it was generally believed that too many babies were being born, and that societies should try to reduce their populations. Nowadays, however, the concern is the reverse - that birthrates are falling too low and that urgent action is needed to encourage people to have more children. But what are the causes of this trend? And how much are the attitudes and lifestyles of young people to blame? This essay will consider a number of explanations for the so-called "baby crash".
1. The problem is that this kind of freedom cannot easily be given in the modern factory with its complicated machinery which must be used in a fixed way. 2. Since 1991, productivity has increased by 2% a year, which is more than twice the 1978-1987 average. 3. The trouble is that part of the recent acceleration is due to the usual rebound that occurs at this point in a business circle, so is not conclusive evidence of an economic revival in the underlying trend. 4. There is a disjunction between the mass of business anecdote that points to a leap in productivity and the picture reflected by the statistics.
A、A. have a clue
B、B. have clues
C、C. have no clue
D、D. have no clues
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