At the initial stage of Beijing Opera, Yuju exerted considerable influence on it. （)

A.tearmanytroubledfamiliesapart

B.bringaboutadropinthedivorcerate

C.causealotofconflictsinthefamily

D.contributetoenduringfamilyties

A.slow

B.high

C.low

D.fast

Passage One

Questions 57 to 61 are based on the following passage.

In times of economic crisis, Americans turn to their families for support. If the Great Depression is any guide, we may see a drop in our skyhigh divorce rate. But this won't necessarily represent an increase in happy marriages. In the long run, the Depression weakened American families, and the current crisis will probably do the same.

We tend to think of the Depression as a time when families pulled together to survive huge job losses. By 1932, when nearly one-quarter of the workforce was unemployed, the divorce rate had declined by around 25% from 1929. But this doesn't mean people were suddenly happier with their marriages. Rather, with incomes decreasing and insecure jobs, unhappy couples often couldn't afford to divorce. They feared neither spouse could manage alone.

Today, given the job losses of the past year, fewer unhappy couples will risk starting separate households. Furthermore, the housing market meltdown will make it more difficult for them to finance their separations by selling their homes.

After financial disasters family members also tend to do whatever they can to help each other and their communities. A 1940 book, The Unemployed Man and His Family, described a family in which the husband initially reacted to losing his job "with tireless search for work." He was always active, looking for odd jobs to do.

The problem is that such an impulse is hard to sustain. Across the country, many similar families were unable to maintain the initial boost in morale (士气) . For some, the hardships of life without steady work eventually overwhelmed their attempts to keep their families together. The divorce rate rose again during the rest of the decade as the recovery took hold.

Millions of American families may now be in the initial stage of their responses to the current crisis, working together and supporting one another through the early months of unemployment.

Today's economic crisis could well generate a similar number of couples whose relationships have been irreparably (无法弥补地) ruined. So it's only when the economy is healthy again that we'll begin to see just how many broken families have been created.

57. In the initial stage, the current economic crisis is likely to______.

A. tear many troubled families apart

B. contribute to enduring family ties

C. bring about a drop in the divorce rate

D. cause a lot of conflicts in the family

Bilateral asymmetry of the claws comes about gradually. In the juvenile fourth and fifth stages of development, the paired claws are symmetrical and cutter like. Asymmetry begins to appear in the juvenile sixth stage of development, and the paired claws further diverge toward well-defined cutter and crusher claws during succeeding stages. An intriguing aspect of this development was discovered by Victor Emmer. He found that if one of the paired claws is removed during the fourth or fifth stage, the intact claw invariably becomes a crusher, while the regenerated claw becomes a cutter. Removal of a claw during a later juvenile stage or during adulthood, when asymmetry is present, does not alter the asymmetry; the intact and regenerate claws retain their original structures.

These observations indicate that the conditions that trigger differentiation must operate in a random manner when the paired claws are intact, but in a nonrandom manner when one of the claws is lost. One possible explanation is that differential use of the claws determines their asymmetry. Perhaps the claw that is used more becomes the crusher. This would explain why, when one of the claws is missing during the fourth or fifth stage, the intact claw always becomes a crusher. With two intact claws, initial use of one claw might prompt the animal to use it more than the other throughout the juvenile fourth and fifth stages, causing it to become a crusher.

To test this hypothesis, researchers raised lobsters in the juvenile fourth and fifth stages of development in a laboratory environment in which the lobsters could manipulate oyster chips. (Not coincidentally, at this stage of development lobsters typically change from a habitat where they drift passively, to the ocean floor where they have the opportunity to be more active by borrowing in the substrate.) Under these conditions, the lobsters developed asymmetric claws, half with crusher claws on the left, and half with crusher claws on the right. In contrast, when juvenile lobsters were reared in a smooth tank without the oyster chips, the majority developed two cutter claws. This unusual configuration of symmetrical cutter claws did not change when the lobsters were subsequently placed in a ma nipulable environment or when they lost and regenerated one or both claws.

The passage is primarily concerned with ______ .

A．drawing an analogy between asymmetry in lobsters and handedness in humans

B．developing a method for predicating whether crusher claws in lobster will appear on the left or right side

C．explaining differences between lobsters' crusher claws and cutter claws

D．discussing a possible explanation for the way bilateral asymmetry is determined in lobsters

A.initiative

B.initiate

C.initial

A.An initial analysis to the device is given in this section.

B.An initial analysis of the device is made in this section.

C.An initial analysis for the device is provided in this section.

D.An initial analysis with the device is presented in this section.

Acronyms are words of initial letters which are pronounced as common words.()

A.To set the initial value of the timer that inhibits handover after a change of channel

B.To set the initial value of the timer that controls the measurement events of the mobile

C.To set the initial value of the timer that controls if handover during signaling is allowed or not

D.To set the initial value of the timer that controls if handover to another BSC is allowed or not

E.To set the initial value of the timer that controls the filtering process

Follow-up letters are addressed to potential employees after an initial job application is turned in.()