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【单选题】
pH相同的醋酸溶液和盐酸，分别用蒸馏水稀释至原体积的m和n倍，稀释后两溶液pH仍相同，则m和n的关系是 [ ]A.
m＝n
B.
m>n
C.
m
D.
无法判断
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【单选题】which of the following is not recommended as a way to get in touch with one's family and friends?
A.
Long distance phone calls
B.
E-mails
C.
Instant messaging
D.
VoIP
【单选题】Which extinguishing agent is NOT recommended in the Chemical Data Guide for use on a cyclohexane fire?（）
A.
Foam
B.
Carbon dioxide
C.
Dry chemical
D.
Water fog
【单选题】Q5: In this conversation, which of the following is not recommended for a healthy breakfast?
A.
A hard-boiled egg.
B.
A piece of 100 percent wholegrain toast.
C.
A cup of 100 percent fruit juice.
D.
Skipping breakfast to lose weight.
【单选题】Which of the following ways to control emotions is NOT recommended in the passage?
A.
To talk as much as possible.
B.
To lean into the discomfort.
C.
To develop a creative outlet.
D.
To try expressing 'a little' emotion.
【单选题】Which of the following is not recommended for a cold?
A.
staying in bed
B.
drinking a lot of water
C.
getting plenty of exercise
【单选题】Which of the following ways is not recommended to a foreigner to Japan?
A.
Use mobile phone in trains unless it is clearly allowed to do so.
B.
Leave people some minutes when people are speaking or thinking about an answer.
C.
Enter shops, cafes or department stores with a dripping wet plastic umbrella.
D.
When indicating an object or direction to someone, wave fingers with the palm downwards.
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