[简答题]对死亡的恐惧源于对生命的恐惧，活得充实的人随时准备死亡。(stem from)

[填空题]Issues in dialect usually stem from the debate over what people view as
Standard American English and what they do not view as Standard American
English. Although people come from different backgrounds and have had 41. ______
different experiences, which becomes a particular problem for communication. 42. ______
Issues arise that confronts people every day in all jobs and in most dealings 43. ______
with other people.
According to Walt Wolfram and Donna Christian’s Dialects and Education,
the term dialect it has several "popular" meanings that stem from the 44. ______
technical definition of dialect. Often people infer to dialect when talking 45. ______
about the way people from certain regions or certainly social groups speak. 46. ______
While this is part of it, it is the entire definition. Other times people 47. ______
refer to people who are speaking different

[单项选择]

For the first time, stem cells purified from fat have been used to heal an injury in a living animal. Michael Longaker of Stanford University in California and his team showed in mouse experiments that so-called adipose derived adult stromal (ADAS) cells purified from a rodent’s belly fat could be coaxed to heal a skull fracture too large to mend by itself.
The power of ADAS cells to transform into bone, cartilage and even neurons has been studied for years in test tubes. But Jeffrey Gimble, who studies human ADAS cells at Louisiana State University in Baton Rouge says Longaker’s report is an important step forward. "Actually repairing a defect in an animal model had never been done. This is an excellent study." If the same technique works in humans, these cells could be coaxed to mend broken bones and correct other defects in tens of thousands of surgical procedures each year in which bone grafts and prosthetics are now necessary.
Longaker&r
A. his work made an unprecedented achievement in the field
B. he proved that ADAS cells contributed a lot to cell therapy
C. his work paved way for ADAS cell application in clinical trials
D. he cured an animal defect that had never been repaired before

[判断题]树木的生命发育周期是指从合子开始到个体死亡的总生命过程。

[填空题]伤残调整生命年，(DALY)是指疾病死亡损失健康生命年与______相结合的综合性指标。

[单项选择]临床死亡期患者生命仍有复苏的可能，此期持续时间一般是
A. 11～15分钟
B. 9～10分钟
C. 7～8分钟
D. 5～6分钟
E. 3～4分钟

[单项选择]没有一位植物学家能活得那么长，可以来得及研究一株加州红木树的全部生命历程。然而，通过观察在不同阶段的许多树，植物学家能够拼凑出一棵树的发展历程。相同的方法应用于天文学中球状星体的生命历程的研究，巨大的100万颗聚集在一起的球状集合。
下列哪一个是上面段落所做的假设
A. 科学家在一个领域内的研究方法通常可以搬到另一领域，即使主题事物有很大的不同。
B. 对一个个体生命循环的研究在科学研究中很少有价值。
C. 在不同的发展阶段的球状星体对于天文学家的观察和研究是能够得到的。
D. 有球状星体至今未被天文学家探测到。
E. 红木树和球状星体现在必须都被广泛研究，当它们仍然以足够的量存在时。