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【单选题】
下列各物质间不是酸碱共轭对的是( )。A.
H 3 O + , OH -
B.
CH 3 NH 3 + ,CH 3 NH 2
C.
NH 3 ,NH 4 +
D.
NH 3 ,NH 2 -
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【单选题】社会公德是指人们在公共生活和社会交往中应该遵守的行为准则，是维护公共利益、公共秩序、社会和谐稳定的起码道德要求。社会公德最基本的要求是
A.
文明礼貌
B.
助人为乐
C.
爱护公物
D.
遵纪守法
【单选题】社会公德是指人们在公共生活和社会交往中要遵守的行为准则，是维护公共利益、公共秩序、社会和谐稳定的起码道德要求，社会公德最基本的要求是( )。
A.
遵纪守法
B.
助人为乐
C.
爱护公物
D.
文明礼貌
【单选题】(2018初赛第1场 suggested completion time: 5 minutes)The figure shows people's satisfaction with the standard of living, personal relationships and health among different age groups in Canada in 2006. Whic...
A.
With respect to personal relationships, seniors have higher levels of satisfaction than all the other age groups: those aged 80 and over have the highest average satisfaction.
B.
Satisfaction with the standard of living and personal relationships is relatively higher among the youngest and oldest age groups, revealing an U-shape in both satisfaction levels among all age groups
C.
The data show that satisfaction with health in general decreases with age: the average satisfaction with health varies from 8.1 for the youngest age group to 7.1 for age groups of 50 to 59 and of 80 and over.
D.
As to the satisfaction with personal relationships, the level is relatively high among those in the youngest age group, whose satisfaction level is comparably the same to those aged 60 to 69.
【单选题】Which of the following details about the news is INCORRECT?
A.
Most of those infected are African American.
B.
Men aged between 4,0 and 50 are among the worst affected.
C.
The city is to solve the problem by taking more tests.
D.
People are taking the HIV/AIDS testing seriously.
【单选题】社会公德是指人们在公共生活和社会交往中要遵守的行为准则是维护社会公共秩序、社会和谐稳定的起码道德要素。社会公德最基本的要求是（）。
A.
遵纪守法
B.
助人为乐
C.
爱护公物
D.
文明礼貌
【简答题】录音 (18) (V0)A. tap
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