| Scientists know that there are two basic approaches
to prolonging for life. One approach is the {{U}} (79) {{/U}} of the
disease that generally {{U}} (80) {{/U}} older people-disease such as
cancer, heart attack and strokes. {{U}} (81) {{/U}} is the delay of the
process of growing old--the {{U}} (82) {{/U}} of the body. In recent years scientific researchers {{U}} (83) {{/U}} much time in the study of the process of aging. They believe that, within a few years, they will develop the knowledge and the {{U}} (84) {{/U}} to delay the aging process for 10 to 15 years. The result will be that more people A. effect B. affect C. reflect D. perfect [单选题]使用甘汞电极时，胶帽的正确使用为( )。
A.测定时打开，测定后戴好 B.测定时戴好，测定后打开 C.一直打开 D.一直戴好 [单选题]铁路行车有关人员,在任职、提职、改职前,必须经过拟任职业的任职( ),并
经职业技能鉴定、岗位任职资格考试合格,取得相应等级的职业资格证书和相关岗位 任职资格后方可任职。 A.专项培训 B.技能培训 C.适应性培训 D.资格培训 [单项选择]工作总时差是指（）。
A. 在不影响紧后工作最早开始时间的前提下，本工作的机动时间 B. 在不影响紧后工作最迟完成时间的前提下，本工作所具有的机动时间 C. 在不影响总工期的前提下，本工作所具有的机动时间 D. 在不影响紧前工作最早完成时间的前提下，本工作所具有的机动时间 [填空题]
Adults are getting smarter about how smart babies are. Not long ago, researchers learned that 4-day-olds could understand (1) and subtraction. Now, British research (2) Graham Schafer has discovered that infants can learn words for uncommon things long before they can speak. He found that 9-month-old infants could be taught, through repeated show and-tell, to (3) the names of objects that were foreign to them, a result that (4) in some ways the received (5) that, apart from learning to (6) things common to their daily lives, children don’t begin to build vocabulary until well into their second year. "It’s no (7) that children learn words, but the, words they tend to know are words linked to (8) situations in the home," explains Schafer. " (9) with an unfamiliar voice giving instructions in an unfamiliar setting." Figuring out how humans acquire language may shed light on why some children learn to read and write later than others, [单选题]如果投资者希望以即时的市场价格进行证券交易，就会下达（ ）。
A.限价指令 B.止损指令 C.市价指令 D.触价指令 [多项选择]尿素装置的成品指标有（）
A. 水份 B. 筛粉 C. 缩二脲 D. 含氮量 我来回答: 提交
|
