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【单选题】
根据专门设计的调查所获得的资料,按照不同的地区、不同的时间和不同的人群特征分组,将疾病或健康状况的分布特点真实地描述出来,为进一步的流行病学的研究提供线索。该方法属于哪类研究方法?
A.
描述性研究
B.
分析性研究
C.
试验性研究
D.
理论性研究
E.
以上均不是
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举一反三
【单选题】鹧鸪天这一词牌最初来自唐代哪位诗人的一首诗?( )
A.
杜牧
B.
李白
C.
郑隅
D.
王维
查看完整题目与答案
【判断题】关于握手礼仪,男士与女士握手,一般要等女士先伸手。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】Passage Three My husband and children feel very happy to live here. They can't see that we live on a dirty street in a dirty house among people who aren't good. They can't see that our neighbors have ...
A.
is easy to get along with
B.
is never pleased with her neighbors
C.
is unhappy with the life they are living
D.
is good at observing and understanding people
查看完整题目与答案
【单选题】There aren’t enough chairs. Would you please ______ ones here? [      ]
A.
to bring another three
B.
bring more three
C.
to take three other
D.
bring three more
查看完整题目与答案
【单选题】Here _____ in the classroom. [     ]
A.
is three woman teachers
B.
is three women teachers
C.
are three woman teachers
D.
are three women teachers
查看完整题目与答案
【单选题】_______ of the students here _______ from the countryside.
A.
Three-fourths; are
B.
Three-fourth; is
C.
Three-fourths; is
D.
Three-fourth; are
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【单选题】— Look! How long _____ like this? — Three weeks! It’s usual here that rain _____ without stopping these days of the year.
A.
had it rained; pours
B.
has it been raining; pours
C.
is it rained; is pouring
D.
does it rain; pours
查看完整题目与答案
【单选题】There aren’t enough boxes. Would you please ______ones here? [     ]
A.
to bring another three
B.
take another three
C.
to take three other
D.
bring three more
查看完整题目与答案
【单选题】在美国所有捐献的血液中有45%是O型的。由于O型血适用于任何人，所以当在没有时间测定患者是何种血型的危急时刻，O型血是唯一可与其他任何血型相融的血型，所以它可以输给任何受血者。然而正是由于这个特殊用途，O型血长期处于短缺状态。 如果上文陈述是正确的，那么下面哪个也一定是正确的?
A.
O型血的特殊用途基于这样一个事实：它与大部分人的血型都相融。
B.
O型血的供应一直很少，以至于在最能体现它有用性的危急时刻，它往往是不够用的。
C.
美国45%的人是O型血，这使得O型血成为最普遍的血型。
D.
要决定输送任何非O型血时都必须以知道受血者的血型为基础。
E.
只有O型血不能按照危急时刻的需要被快速地测定出来。
查看完整题目与答案
【单选题】The railway station is within ______ drive from here.
A.
three hours
B.
three-hours
C.
three-hour
D.
three-hour-long
查看完整题目与答案
相关题目：
【单选题】鹧鸪天这一词牌最初来自唐代哪位诗人的一首诗?( )
A.
杜牧
B.
李白
C.
郑隅
D.
王维
查看完整题目与答案
【判断题】关于握手礼仪,男士与女士握手,一般要等女士先伸手。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】Passage Three My husband and children feel very happy to live here. They can't see that we live on a dirty street in a dirty house among people who aren't good. They can't see that our neighbors have ...
A.
is easy to get along with
B.
is never pleased with her neighbors
C.
is unhappy with the life they are living
D.
is good at observing and understanding people
查看完整题目与答案
【单选题】There aren’t enough chairs. Would you please ______ ones here? [      ]
A.
to bring another three
B.
bring more three
C.
to take three other
D.
bring three more
查看完整题目与答案
【单选题】Here _____ in the classroom. [     ]
A.
is three woman teachers
B.
is three women teachers
C.
are three woman teachers
D.
are three women teachers
查看完整题目与答案
【单选题】_______ of the students here _______ from the countryside.
A.
Three-fourths; are
B.
Three-fourth; is
C.
Three-fourths; is
D.
Three-fourth; are
查看完整题目与答案
【单选题】— Look! How long _____ like this? — Three weeks! It’s usual here that rain _____ without stopping these days of the year.
A.
had it rained; pours
B.
has it been raining; pours
C.
is it rained; is pouring
D.
does it rain; pours
查看完整题目与答案
【单选题】There aren’t enough boxes. Would you please ______ones here? [     ]
A.
to bring another three
B.
take another three
C.
to take three other
D.
bring three more
查看完整题目与答案
【单选题】在美国所有捐献的血液中有45%是O型的。由于O型血适用于任何人，所以当在没有时间测定患者是何种血型的危急时刻，O型血是唯一可与其他任何血型相融的血型，所以它可以输给任何受血者。然而正是由于这个特殊用途，O型血长期处于短缺状态。 如果上文陈述是正确的，那么下面哪个也一定是正确的?
A.
O型血的特殊用途基于这样一个事实：它与大部分人的血型都相融。
B.
O型血的供应一直很少，以至于在最能体现它有用性的危急时刻，它往往是不够用的。
C.
美国45%的人是O型血，这使得O型血成为最普遍的血型。
D.
要决定输送任何非O型血时都必须以知道受血者的血型为基础。
E.
只有O型血不能按照危急时刻的需要被快速地测定出来。
查看完整题目与答案
【单选题】The railway station is within ______ drive from here.
A.
three hours
B.
three-hours
C.
three-hour
D.
three-hour-long
查看完整题目与答案