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【单选题】
如图，四边形A1B1C1D1是平行四边形，A2,B2,C2,D2分别是A1B1C1D1四边的中点，A3,B3,C3,D3分别是四边形A2B2C2D2四边的中点，依次下去，得到四边形到AnBnCnDn(n=1,2,3=……)。设AnBnCnDnAnBnCnDn的面积为Sn，且S1=12、S1=12，则S1+S2+S3+……=().A.
16
B.
20
C.
24
D.
28
E.
30
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【单选题】This is the famous hall _______ British politicians have debates.
A.
where
B.
when
C.
who
D.
whose
【单选题】Rising job losses are likely to _______ future sales.
A.
cut into
B.
look for
C.
come across
D.
insist on
【单选题】In addition to job losses, what stands in the way of unhappy couples getting a divorce?
A.
Mounting family debts.
B.
A Sense of insecurity.
C.
Difficulty in getting a loan.
D.
Falling housing prices.
【单选题】Job losses are an unfortunate ( ) of the recession.
A.
byproduct
B.
product
C.
result
D.
outcome
【单选题】In the 18th century many British politicians favored friendship with Prussia because they thought that the Prussian army was ______ to the British navy.
A.
complimentary
B.
complicated
C.
complementary
D.
comprehensive
【简答题】It was ________ that there would be job losses.
【单选题】史料实证——经济格局变动 据唐代天宝年间统计的全国户口数字,秦岭、淮河以南地区的户数占45%,以北占到55%;据北宋《太平寰宇记》所载北宋初期全国户数,秦岭、淮河以南地区的户数占59.1%,以北则为40.9%。这一变化( )
A.
导致丝绸之路的受阻
B.
导致宋代政治中心的南移
C.
反映经济格局的变动
D.
加剧人地矛盾的尖锐程度
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