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【简答题】
Based on ______ , we conclude that the widening gap between the richest tech companies and midsize ones has reached a record.
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参考答案:
举一反三
【简答题】In the morning, we should clean our teeth with a _______.A. toothbrush
【单选题】生物碱分子中氮原子杂化方式与其碱性强弱的关系是
A.
SP > SP 2 > SP 3
B.
SP > SP 3 > SP 2
C.
SP 3 > SP 2 > SP
D.
SP 3 > SP > SP 2
【单选题】1999年真题 生物碱分子中氮原子杂化方式与其碱性强弱的关系是
A.
SP>SP2>SP3
B.
SP>SP3>SP2
C.
SP3>SP2>SP
D.
SP3>SP>SP2
E.
SP2>SP3>SP
【单选题】生物碱分子中氮原子杂化方式与其碱性强弱的关系是
A.
sp>sp2>sp3
B.
Sp>sp3>sp2
C.
Sp3>sp2>sp
D.
Sp3>sp>sp2
E.
Sp2>sp3>sp
【单选题】允许性低热卡的初始能量选择一般为
A.
10-20千卡/kg/d
B.
20-25千卡/kg/d
C.
30-35千卡/kg/d
D.
40-45千卡/kg/g
E.
越高越好
【单选题】We should keep our clean.
A.
tooth
B.
tooths
C.
toothes
D.
teeth
【单选题】We should keep our clean.
A.
toothes
B.
tooths
C.
teeths
D.
teeth
【简答题】Postal deliveries were delayed because of industrial action.Industrial action resulted ______.
【单选题】We should clean our ___ twice a day.
A.
tooth
B.
teeth
C.
tooths
【单选题】We should clean our ______ twice a day.
A.
tooth
B.
tooths
C.
teeth
D.
teeths
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