问题 选择题

下列物质不属于溶液的是(  )

A.生理盐水

B.“雪碧”汽水

C.葡萄酒

D.珍珠奶茶

答案

A、生理盐水是氯化钠的水溶液,均以稳定,属于溶液,故A错;

B、雪碧汽水是均一、稳定的混合物,其中含有碳酸和其它配料,属于溶液,故B错;

C、葡萄酒是均一稳定的混合物,属于溶液,故C错;

D、珍珠奶茶属于乳浊液,不均一、不稳定,不属于溶液,故D正确.

故选D.

完形填空

根据课文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

A greeting is a friendly expression or gesture used when meeting or welcoming someone. Greetings usually happen before a conversation and sometimes accompanied by some greeting behaviors such as a small kiss or a hug and handshake. Though the time to greet someone is short,      

 小题1:   . Just as the Chinese saying goes “A kind word could warm one for three winters, a bad attitude would make one cold even in hot summer.”

The following are some greetings in different countries.

1. America: Firm handshakes should last 3-5 seconds.  小题2:   . When greeting multiple people, make eye contact with the person whose hand you are taking, and then go on to the next. They are not used to standing too closely.

2. United Kingdom: A hand shake is the most common form of greeting for both men and women. When people are already familiar, verbal greetings are used. Personal space is important and people can feel uncomfortable if someone stands too close to them.    小题3:  .

3. Australia: A handshake is the preferred greeting. When speaking to an Australian, keep an arm’s length distance from the person.   小题4:   , and eye contact should be maintained as well.

4. Canada: A handshake is traditional. Men usually wait for women to offer theirs. Direct, but not too intense eye contact is acceptable, especially to convey sincerity. The standard distance between two people should be two feet.    小题5:  .

A.Touching is generally avoided

B.people still greet each other with a “hello”.

C.French Canadians, however, may stand slightly closer.

D.its influence is long and profound.E. When people already know each other well, they needn’t greet.

F. Good eye contact shows interest, sincerity and confidence.

G. Maintaining personal space is important in this culture

判断题