The linkages between project management process groups are best described by: （）.

A:The work breakdown structure links process groups B:Process groups are linked by their planned objectives-the summary objective of one often becomes the detailed action plan for another C:Process groups are linked by the objectives they produce-the output of one process often becomes an input to another process, or is a deliverable of the project D:There are no significant links between discrete process groups

Lots of creatures already reproduce without sex. Since the birth of Louise Brown, the first test-tube baby, in 1978, (1) of human beings (2) in laboratory glassware rather than in bed.
If human cloning becomes possible—and since the birth of a sheep called Dolly, (3) doubt that it will be feasible to clone a person by 2025—even the link between sex organs and reproduction (4) . You will then be able to take a cutting from your body and grow a new person, (5) you were a willow tree.
(6) , we have already divorced sex from reproduction. In the 1960s, the contraceptive pill freed women to enjoy sex for its own sake. (7) , greater tolerance of homosexuality signaled society’s acceptance of nonreproductive sex of another sort. These changes are only continuations of a (8) that started perhaps a million years ago.
Human beings (9) the interest in infertile, social sex with a few other species: dolphins, apes and some birds. But (10) sex is too good for human beings to (11) , more and more people will abandon it as a (12) of reproduction.
In the modern world, you can (13) have sex and parenthood without suffering the bit (14) . Some Hollywood actresses (15) the urge for mothering by electing to adopt children (16) spoil their figures (as they see it) by childbearing. For people as beautiful as this, the temptation to (17) a clone (reared in a surrogate womb) could one day be (18) .
However, human cloning and designer babies are probably not (19) . Even assuming that the procedures are judged safe and efficient in farm animals, still a long way off, they will be heavily (20) , if not banned, by many governments for human beings.

A:in B:between C:among D:in between

Lots of creatures already reproduce without sex. Since the birth of Louise Brown, the first test-tube baby, in 1978, (1) of human beings (2) in laboratory glassware rather than in bed.
If human cloning becomes possible—and since the birth of a sheep called Dolly, (3) doubt that it will be feasible to clone a person by 2025—even the link between sex organs and reproduction (4) . You will then be able to take a cutting from your body and grow a new person, (5) you were a willow tree.
(6) , we have already divorced sex from reproduction. In the 1960s, the contraceptive pill freed women to enjoy sex for its own sake. (7) , greater tolerance of homosexuality signaled society’s acceptance of nonreproductive sex of another sort. These changes are only continuations of a (8) that started perhaps a million years ago.
Human beings (9) the interest in infertile, social sex with a few other species: dolphins, apes and some birds. But (10) sex is too good for human beings to (11) , more and more people will abandon it as a (12) of reproduction.
In the modern world, you can (13) have sex and parenthood without suffering the bit (14) . Some Hollywood actresses (15) the urge for mothering by electing to adopt children (16) spoil their figures (as they see it) by childbearing. For people as beautiful as this, the temptation to (17) a clone (reared in a surrogate womb) could one day be (18) .
However, human cloning and designer babies are probably not (19) . Even assuming that the procedures are judged safe and efficient in farm animals, still a long way off, they will be heavily (20) , if not banned, by many governments for human beings.

A:in B:between C:among D:in between

It was during the 1920’s (that) the friendship (between) the two American writers Hemingway and Fitzgerald reached (their) (highest) point.（　）

A:that B:between C:their D:highest

(Fighting) broke (out) (between) the Northern (states) and Southern states.

A:Fighting B:out C:between D:states

Many IQ tests show that there are no significant differences in the mean, or average scores of IQ tests between men and women. When a new IQ test, is being constructed, it is quite easy to find test (51) that are not answered correctly (52) the same proportions of men and women, (53) these are usually then eliminated from the test. So, to some (54) the fact that no differences are to be found in our current IQ tests between the (55) for the two sexes is hardly surprising.
There are, (56) , differences in the standard deviations(偏差)or variability of the (57) of the two sexes in many IQ tests, (58) men showing the greater variation. The (59) of many IQ test scores are such (60) they approximate to the normal curve(正规曲线). If we regard some arbitrary lower score on a test as a classification like "educational subnormal(智力上逊常的人)" (ESN) and some equally arbitrary (61) score as "gifted", we then find that there is higher ratio of ESN males to women and likewise we (62) that there are more gifted men than women, even though the average scores are the same.
The (63) of men and women are known to differ somewhat in size, with women having about 200g less tissue (64) the other hand, they also tend to (65) less body mass, and over the phylogenetic(系统发育的)scale, the best index of species intelligence is the ratio of body mass to brain size.

A:between B:upon C:by D:at

? ?阅读下面的短文，文中有15处空白，每处空白给出4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 ?

A:between B:upon C:by D:at