Which of the following most accurately state a finding of Bolte’s research, as described in the passage？
A. The globular clusters in the Milky Way galaxy are 2 billion years older than predicted by the conventional theory.
B. The ages of at least some globular clusters in the Milky Way galaxy differ by at leat 4 billion years.
C. One of the globular clusters in the Milky Way galaxy is 5 billion years younger than most others.
D. The globular clusters in the Milky Way galaxy are significantly older than the individual stars in the halo.
E. Most globular clusters in the Milky Way galaxy are between 11 and 15 billion years old.
Which of the following, if true, would be most useful in supporting the conclusions drawn
A. There is firm evidence that the absolute age of the Milky Way galaxy is between 10 and 17 billion years.
B. A survey reveals that a galaxy close to the Milky Way galaxy contains globular clusters of ages close to the age of Palomar 12.
C. A mathematical model proves that small gas clouds move in regular patterns.
D. Space probes indicate that the stars in the Milky Way galaxy are composed of several different types of gas.
E. A study of over 1,500 individual stars in the halo of the Milky Way galaxy indicates wide discrepancies in there ages.
腹壁柔韧感出现于
A. 急性阑尾炎穿孔
B. 胃溃疡穿孔
C. 结核性腹膜炎
D. 早期胃癌
E. 血吸虫病
关于Ig的描述，正确的是()。
A. 具有抗原性
B. IgD构成的免疫复合物可通过Clq激活补体
C. IgH中含分泌片
D. Ig有κ和λ两类重链
E. 可被胃蛋白酶水解成Fab和Fc段
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