reading-TPO19 The Roman Army's Impact on Britain - 英檢

麻煩各位的幫忙了~

Paragraph 4:
The army also provided a means of personal advancement for auxiliary soldiers
recruited from the native peoples, as a man obtained hereditary Roman
citizenship on retirement after service in an auxiliary regiment. Such units
recruited on an ad hoc (as needed) basis from the area in which they were
stationed, and there was evidently large-scale recruitment within Britain.
The total numbers were at least 12,500 men up to the reign of the emperor
Hadrian (A.D. 117-138), with a peak around A.D. 80. Although a small
proportion of the total population, this perhaps had a massive local impact
when a large proportion of the young men were removed from an area. Newly
raised regiments were normally transferred to another province from whence it
was unlikely that individual recruits would ever return. Most units raised in
Britain went elsewhere on the European continent, although one is recorded in
Morocco. The reverse process brought young men to Britain, where many
continued to live after their 20 to 25 years of service, and this added to
the cosmopolitan Roman character of the frontier population. By the later
Roman period, frontier garrisons (groups of soldiers) were only rarely
transferred, service in units became effectively hereditary, and forts were
no longer populated or maintained at full strength.

9. According to paragraph 4, which of the following is true of Britain’s
auxiliary regiments of the Roman army?
○Membership in these regiments reached its highest point during the reign of
the emperor Hadrian.
○Most of the units recruited in Britain were sent to Morocco and other
stations outside Europe.
○Soldiers served in the regiments for many years and after retirement
generally stayed where they had been stationed.
○Most of the regiments stationed on the frontier were new units transferred
from a neighboring province.

10. According to paragraph 4, all of the following changes could be seen in
the frontier garrisons by the later Roman period EXCEPT:
○Membership in the units passed from father to son.
○Fewer soldiers were stationed at the forts.
○Soldiers usually were not transferred to different locations.
○Frontier units became more effective and proficient.

我想請教各位的是，第9題為什麼是選擇C呢?

然後第十題的答案是D，請問是不是從By the later Roman period至最後就是答案的所在
呢??

麻煩各位高手幫我解答了，謝謝^^

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