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【单选题】
在正常心脏，兴奋传导的顺序是A.
结→房室交界→心房肌→心室肌
B.
结→房室交界→心室肌→纤维网→心房肌
C.
结→心房肌→心室肌→纤维网→心室肌
D.
结→心房肌→房室交界→房室左右→纤维网→心室肌
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举一反三
【单选题】The little baby was very excited ________the sight of his mother.
A.
at
B.
on
C.
in
D.
off
【单选题】The little baby was very excited _______the sight of his mother.
A.
at
B.
in
C.
for
D.
into
【单选题】The little baby was very excited ______ the sight of his mother.
A.
in
B.
to
C.
at
D.
for
【简答题】数据类型转换分为【】和强制类型转换。
【单选题】The little baby was ______ looked after by her.
A.
closely
B.
close
C.
close d
D.
closing
【单选题】Britain founded America, and the language used in America has been______ .
A.
the same as British English
B.
changed so much so that no British people can understand it
C.
out of control
D.
based on the British English, but changed to a certain extent
【简答题】The little baby was very excited ____ the sight of his mother.
【单选题】Which of the following statements in NOT true?
A.
The way names are used in America is different from those of other countries.
B.
Many Americans are used to being called by their first names.
C.
It shows friendliness and kindness to use only first names.
D.
When you talk to people in the United States, you have to use their first names.
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