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【单选题】
鸟氨酸循环中,合成尿素的第二个 NH 3 由下列哪种氨基酸直接提供
A.
氨基甲酰磷酸
B.
天冬氨酸
C.
鸟氨酸
D.
游离氨
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参考答案:
举一反三
【单选题】Which of the following is NOT the views of Americans upon time?
A.
All of us are slaves to time.
B.
Time is a precious resource.
C.
Time is a circle, you can come to where you were.
D.
Time is like the sand in the hourglass.
【简答题】Once upon a time there was a little boy who became very ill.He had to spend all day in bed, unable to ____.Because other children weren't allowed to come near him, he ____ greatly, and spent his days ...
【单选题】'Town Hall is the tallest building in the city.' '()from here?'
A.
Can it see
B.
Can it beseen
C.
Can be seeing
D.
Can see
【单选题】Why should the rooftop garden be build on the top of City Hall other than on any other buildings?
A.
Because the City Hall is large.
B.
Because the mayor had urged the environmental department to do so.
C.
Because it can make people understand their impact on environment better through a public building.
D.
Because the experts just want to make the City Hall a convenient laboratory.
【简答题】Once upon a time there was a ______ who had a beautiful ball. 2.The ball was ________ like the sun. 3.The princess didn’t want to play with the _______ frog. 4.The frog wanted to _______ after drinkin...
【单选题】七七卢沟桥事变 发生于
A.
1936 年
B.
1937 年
C.
1941 年
D.
1946 年
【简答题】Once upon a time there lived a poor farmer called Smith. He didn't like to share things with others. Smith had a friend who was famous for the wonderful apples he grew. One day, his friend gave Smith ...
【单选题】Once upon a time,he ( )a poor farmer.
A.
was
B.
is
【单选题】Visitors have ______ to the City Hall during the vocation.
A.
admission
B.
allowance
C.
approval
D.
access
【单选题】Once upon a time a poor farmer taking a sack of wheat to the mill did not know 【C1】______ to do when it slipped from his horse and fell 【C2】______ the road. The sack was 【C3】______ heavy for him to 【C...
A.
how
B.
what
C.
which
D.
whether
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