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【单选题】
《齐民要术》自序：“耒耜，以利天下。四子，敬授民时。舜命后稷，食为政首。……之盛。《诗》《书》所述，要在，富而教之。”这段话主要强调（）A.
儒家对农业的重视
B.
改进生产工具的意义
C.
历法与农业的关系
D.
农业技术的重要性
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【单选题】—Is Lucy knocking at the door? —No. It ______ be Lucy. She is in Japan now. [ ]
A.
needn't
B.
mustn't
C.
can't
D.
shouldn't
【单选题】Smoking is considered dangerous to the health: Our tobacco-seller Mr. Johnson, therefore, always asks his customers, if they are very young , whom the cigarettes are bought【C1】______. One day, a littl...
A.
with
B.
to
C.
for
D.
by
【单选题】Smoking is considered dangerous to the health. Our tobacco--seller, Mr. Johnson, therefore, always asks his customers, if they are very young, whom the cigarettes are bought(51). One day, a little gir...
A.
with
B.
to
C.
for
D.
by
【单选题】It's upsetting when a person gets_____for a crime that he didn't commit.
A.
punished
B.
punishing
C.
punish
D.
punishes
【简答题】Smoking is considered erous to the health. Our tobacco-seller Mr. Johnson, therefore, always asking his customers if they are very young, whom the cigarettes are bought 1 . One day, a little girl ...
【简答题】科氏加速度是由(______)运动与(______)运动相互影响产生的。
【简答题】科氏加速度是由(____)运动与(____)运动相互影响产生的。
【简答题】点在复合运动中,下述说法是否正确:(按正确与否回答对错) 当牵连运动为平动时,一定没有科氏加速度。 ( ) 当牵连运动为转动时,一定有科氏加速度。 ( ) 当相对运动是直线运动时,动点的相对运动只引起牵连速度...
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