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【单选题】
如图所示,一小球从A点由静止开始沿斜面做匀变速直线运动,若到达B点时速度为υ,到达C点时速度为2υ,则AB、BC段的距离之比为()。
A.
1:1
B.
1:2
C.
1:3
D.
1:4
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【单选题】It is in that primary school ________ Mary once studied for six years that she will build a library,________ delights all the students and teachers in the school.
A.
where;that
B.
that;that
C.
that;which
D.
where;which
【单选题】下列哪项不是急性胰腺炎的体征
A.
上腹或全腹压痛明
B.
腹肌紧张
C.
反跳痛
D.
肝浊音界消失
E.
肠鸣音碱弱或消失
【单选题】She often thinks that her six years in Italy were wasted, ______ she ______ that time learning more Italian.
A.
but that might have taken
B.
for that should have found
C.
in that could have spent
D.
with that would have used
【简答题】A.She's studied the piano for six years. B.She studied the guitar for three months. C.She doesn't have any. D.She has very little.
【单选题】下列哪项不是急性胰腺炎的体征是
A.
上腹或全腹压痛明显
B.
腹肌紧张
C.
反跳痛
D.
肝浊音界消失
E.
肠鸣音减弱或消失
【单选题】She has a _____ daughter. [     ]
A.
six-years-old
B.
six-year-old
C.
six years old
D.
six year old
【单选题】---How old is your sister?  --She is __ than I.
A.
older six years
B.
six years older
C.
six years elder
D.
older by six year
【简答题】Look at this photo. The girl is from Beijing. She is six years old. She is not tall and she has short black hair. She has big eyes, a small nose and a wide mouth. She is in old clothes. Now she is los...
【单选题】She went to the _____ school when she was six years old.
A.
primary
B.
principal
C.
average
D.
common
【单选题】数据库管理系统保证数据之间满足一定的关系,或者将数据控制在有效的范围内,属于以下( )控制功能。
A.
数据安全性
B.
数据完整性
C.
并发控制
D.
数据恢复
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