All of us in research have focused on a drug that is so________that it can change brain chemistry.

Of all the employed workers in the United States, 12.5 million are part of a temporary workforce. The United States Bureau of Labor Statistics counts 9.2 percent of workers as those who have【C1】______they term "alternative employment arrangements. " The government predicts that temporary staffing agencies【C2】______ experience growth of 49 percent by 2010. If numbers increase at the rate【C3】______, these companies will add 1. 9 million new jobs by 2010. That's more than any【C4】______ industry. Temporary workers were the first ones to be affected by the recent economic recession, but they are【C5】______ to be the first to regain positions as the economy picks up and companies work to rebuild. Employers use temporary workers as a resource because【C6】______ offer flexibility and come at a low cost. Many temporaries are categorized as " independent contractors" instead of employees,【C7】______allows the employer to avoid 【C8】______ certain taxes. Because they are not required to offer benefits to temporary workers, companies can save a great deal of money by hiring temps. Usually, temporary workers can qualify【C9】______ benefits if they work for a staffing company for a certain length of time. Most temps, however, do not continue with one company long 【C10】______ to qualify for them because they regard the position as a step on the ladder to a【C11】______ position later. According to Richard Wahlquist, president of the American Staffing Association, 75【C12】______ of temporary workers hope for transition out of the temporary staffing category【C13】______ a period of time. Wahlquist finds that temporary workers spend about 11 weeks on various assignments before their【C14】______ out of the temporary workforce. Many use temporary positions to gain experience and skills 【C15】______ they move on to better jobs. Wahquist says that the temp workforce as a whole turns【C16】______ 400 percent each year. Tom Dilworth, research director at the Employment Policies Institute, explains【C17】______ some workers like having temporary jobs【C18】______ it affords them a great deal of elasticity with time and everything. Some temps only have a limited【C19】______ of time to work and temp agencies can help coordinate jobs to fit their schedules. Other sometimes-employees use temporary jobs to get an【C20】______ to a company from the inside, to get a foot in the door of a certain business or career. Still others take temporary positions in hopes their employers will change them over to permanent positions eventually.

Our company has been made one of the largest manufacturers in the field of chemical industry.

Security men believe the tit-for-tat murders were the result of the bombing which had occurred in the city center.

For a long time in that vast region, this law was in abeyance .

Since she did not have time to read the entire play before class, she read an outline of the plot instead.

Mark Anthony's eulogy of Caesar at his funeral is memorably recorded in a play by Shakespeare.

One of the effective ways to lessen environmental pollution is the reservation and protection of more swamps .

When Akiyama Toyohiro, Japan's first astronaut, completed his stint in space, he came back down to earth with more than one worry.

Tom felt sure he would get the post, but he was never even considered for it. That was a smack in the eye for him.

Researchers have discovered that dolphins are able to mimic human speech.

This reflects the priority being attached to economic over political activity, partly caused by a growing reluctance to enter a calling blighted by relentless publicity that all too often ends in destroying careers and reputations.

One out of five bridges in the United States is outmoded .

The prisoner________that he had assaulted a policeman.

So engrossed in his efforts would Gaugin become that he barely noticed the passing of time.

In the last few years, the________of regular folks going under the cosmetic knife skyrocketed.

Because it is not a serious problem, we are not necessary to take strict measures against the student.

The word " wrath " in The Grapes of Wrath by the Nobel prize winner John Steinbeck probably means:

The ocean bottom — a region nearly 2. 5 times greater than the total land area of the Earth — is a vast frontier that even today is largely unexplored and uncharted. Until about a century ago, the deep-ocean floor was completely inaccessible , hidden beneath waters averaging over 3, 600 meters deep. Totally without light and subjected to intense pressures hundreds of times greater than at the Earth's surface, the deep-ocean bottom is a hostile environment to humans, in some ways as forbidding and remote as the void of outer space . Although researchers have taken samples of deep-ocean rocks and sediments for over a century, the first detailed global investigation of the ocean bottom did not actually start until 1968, with the beginning of the National Science Foundation's Deep Sea Drilling Project (DSDP). Using techniques first developed for the offshore oil and gas industry, the DSDP's drill ship, the Glomar Challenger, was able to maintain a steady position on the ocean's surface and drill in very deep waters, extracting samples of sediments and rock from the ocean floor. The Glomar Challenger completed 96 voyages in a 15-year research program that ended in November 1983. During this time, the vessel logged 600, 000 kilometers and took almost 20, 000 core samples of seabed sediments and rocks at 624 drilling sites around the world. The Glomar Challenger's core samples have allowed geologists to reconstruct what the planet looked like hundreds of millions of years ago and to calculate what it will probably look like millions of years in the future. Today, largely on the strength of evidence gathered during the Glomar Challenger's voyages, nearly all earth scientists agree on the theories of plate tectonics and continental drift that explain many of the geological processes that shape the Earth. The cores of sediment drilled by the Glomar Challenger have also yielded information critical to understanding the world's past climates. Deep-ocean sediments provide a climatic record stretching back hundreds of millions of years, because they are largely isolated from the mechanical erosion and the intense chemical and biological activity that rapidly destroy much land-based evidence of past climates. This record has already provided insights into the patterns and causes of past climatic change — information that may be used to predict future climates.

Even though the main source of________ exposure for a majority of the human population is the sun, the artificial tanning from sun beds contributes significantly to the total UV risk.