第四部分∶填句补文（第 26～30题，每题2分，共10分）
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First-born Children
How do first-born children differ from later-born children? Hundreds of experiments have shown that the eldest child tends to be more careful, more eager for success, and more anxious.26_______ He avoids dangerous sports like football and soccer.
One thing seems certain: first-borns have a good start in life. They are no more intelligent. But they are better readers as children.They do better in high school. They get better grades on school tests. More first-borns go to colleges and graduate schools.27_______ They dominate（占优势） in graduate schools. They account for more than a third of doctors, lawyers and college professors. More first-borns become famous people in the world.
One reason for differences between older and younger children is that parents treat them differently.Many parents usually favor the eldest because everything he does is a novelty（新奇）. First-borns tend to be breast-fed longer.They are photographed endlessly. 28_______ First-borns are also given more responsibility because the mother needs them to help with the younger ones.
29_______ Sometimes it is simply because families cannot afford to send more than one child to college.
30_______The first-born child provides the first vehicle by which parents can continue their own identities and realize their hopes and dreams. All in all, it seems that first-borns are not only teachers' pets, but parents' pets as well.
A. He is also more sensitive to pain.
B. Many parents simply expect more of the first child.
C. They account for 66% of the students in top US universities.
D.Later-borns have valuable qualities that many first-borns lack.
E. But later-borns are lucky to appear in group pictures.
F. In certain cultures, the eldest should enjoy special educational advantages.
【正确答案】：26.A
27.C
28.E
29.F
30.B
