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【单选题】
关于运动,下列说法中正确的是 [ ]A.
物体在恒力作用下可能做曲线运动
B.
物体在变力作用下不可能做直线运动
C.
物体在恒力作用下不可能做曲线运动
D.
物体在变力作用下不可能保持速率不变
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举一反三
【单选题】The substance that significantly promotesoxidative phosphorylationis
A.
ATP
B.
ADP
C.
Succinic acid
D.
Vitamin C
E.
CoASH
【单选题】The substance that bilirubin is converted directlyinto in the intestine is
A.
bilirubin
B.
biliverdin
C.
bilinogen
D.
stercobilin
E.
urobilin
【单选题】( 全国卷 3)7 ． Listen to the two girls by the window. What language ___________?
A.
． did they speak
B.
． were they speaking
C.
． are they speaking
D.
． have they been speaking
【单选题】—Listen! Someone is playing the piano. —Wow! _______ beautiful music! I like it very much. [ ]
A.
What
B.
How a
C.
What a
D.
How
【多选题】The substance that can stimulate gastric secreting is:
A.
gastrin
B.
histamine
C.
ACh
D.
fat and its digestive products
【单选题】Listen to the music and try to ______ yourself. [ ]
A.
clean
B.
take
C.
find
D.
relax
【单选题】The substance that significantly promotesoxidative phosphorylation is
A.
ATP
B.
ADP
C.
Succinic acid
D.
Vit C
E.
CoASH
【单选题】The substance that cannot increase the anti-stress ability of plants is.
A.
Stress protein
B.
Osmoregulation substance
C.
ABA
D.
Ethylene
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