In the past year, a lot has changed in the field of human spaceflight. (46) In January, President George Bush brushed aside the fact that America’s entire space-shuttle fleet was grounded when he announced grandiose plans to put people back on the moon, and then to launch a manned mission to Mars. (47) In June, Burt Rutan, an American aeronautical engineer, showed that human spaceflight was no longer the preserve of governments by sending a man to the edge of space in Space Ship One, a privately financed vehicle that cost about the same to build as a luxury yacht. That was followed in September by Sir Richard Branson, the British entrepreneur behind the Virgin brand, announcing that he had signed a deal with Mr Rutan to work on plans for a fleet of five suborbital vehicles developed from Space Ship One.
(48) Now, in the dying days of the year, America’s Congress has passed a bill that unravels a tangle about who would be responsible for regula
According to the U. S. National Highway Traffic Safety Administration (NHTSA), car crashes are the leading cause of death among children (51) 5 and 14 years of age. Says NHTSA: "Over 50% of children who die in crashes are (52) by safety devices. (53) , 4 out of 5 children are improperly restrained."
The NHTSA offers a number of safety tips and (54) for those who are accompanied by children while driving. Although laws (55) from country to country and even from state to state, these guidelines may (56) food for thought to many parents and guardians of children. Please check your local laws and do (57) you can to keep your precious baby safe.
The safest place for all children is in the back seat. Infants should be (58) in a rear facing safety seat in the backseat of the car. A child at least a year old and (59) at least 20 pounds may be placed in a forward-facing seat. At 40 po
A. work
B. vary
C. enforce
D. affect
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