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【单选题】
第一心音的组成主要是由于
A.
半月瓣开放
B.
心房收缩
C.
房室瓣关闭
D.
乳头肌收缩
E.
血流冲击大血管
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举一反三
【单选题】唐诗“春眠不觉晓,处处闻啼鸟。夜来风雨声,花落知多少”作者是( )。
A.
李白
B.
杜甫
C.
白居易
D.
孟浩然
【单选题】请分析古诗词歌曲《春晓》词句属于()韵辙。“春眠不觉晓,处处闻啼鸟。夜来风雨声,花落知多少。”
A.
遥条辙
B.
发花辙
C.
油求辙
D.
江阳辙
【单选题】一朵花中由2个以上心皮彼此连合构成一个雌蕊,称为
A.
离生心皮雌蕊
B.
单雌蕊
C.
复雌蕊
D.
多雌蕊
E.
双雌蕊
【单选题】Answer the questions about the words. 2 In an atmosphere of political radicalism, will students be (a) active, or (b) not very active?
A.
active
B.
not very active
【单选题】Jane is ____ girl, she often takes ____ part in the school's activities. [     ]
A.
active; active
B.
an active; active
C.
active; an active
D.
an active; an active
【单选题】A knowledge of the composition of the weed community ______.
A.
is essential to the efficient control of weeds
B.
may lead us to be aware of the fact that the soil contains enormous quantities of seeds of numerous species
C.
helps us to have a good idea of why seeds can lie dormant for years
D.
provides us with the means to identify weeds at the seedling stage
【简答题】病人朱某,因破伤风入院,患者神志清楚,全身肌肉阵发性痉挛,抽搐。下列病室环境条件中,哪项不符合病情要求( )
【单选题】在WINDOWS 7中所有输入法之间切换,应使用( )
A.
ALT+SPACE
B.
ALT+SHIFT
C.
CTRL+SPACE
D.
CTRL+ SHIFT
【简答题】active absorption
【单选题】The ratio of the work done by the machine ______the work done on it is called the efficiency of the machine.
A.
against
B.
with
C.
to
D.
for
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