题目内容
Most________three states．They are gas，liquid and solid．
- A.matter has
- B.matter have
- C.matters has
- D.matters have
A
分析：most+名词/most of/most(单用most)既可以指可数名词，也可以指不可数名词(most of后面和half一样还可以跟可数名词的单数表示一个整体)，判断时是根据名词的性质，此处matter解释为“物质”，属于不可数名词。所以应该选A项。(延伸)matter作“事情”解释时是可数名词，如：He has money matters．(他经济上有麻烦)
分析：most+名词/most of/most(单用most)既可以指可数名词，也可以指不可数名词(most of后面和half一样还可以跟可数名词的单数表示一个整体)，判断时是根据名词的性质，此处matter解释为“物质”，属于不可数名词。所以应该选A项。(延伸)matter作“事情”解释时是可数名词，如：He has money matters．(他经济上有麻烦)
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Teeth are important. Strong, healthy teeth help you chew all kinds of foods that help you grow. They help you speak clearly. And yes, they help you look your best. Here are some tips for you to take care of your teeth.
【小题1】How many times at least should we brush our teeth a day?
【小题2】What is the major cause of tooth decay?
【小题3】How often should we change our toothbrushes?
【小题4】The bristles of the toothbrush must be_______.
【小题5】Which is the right way to take care of your teeth?
【小题1】How many times at least should we brush our teeth a day?
| A．1. | B．2. | C．3. | D．4. |
| A．Not brushing teeth. | B．Not changing toothbrushes. |
| C．Eating sugar. | D．Not flossing teeth. |
| A．Never. | B．Three times a month. |
| C．Every three months. | D．Every month. |
| A．hard | B．soft. | C．expensive. | D．not mentioned. |
| A．Only brush front teeth. |
| B．Don’t brush teeth before sleeping. |
| C．Spend at most three minutes brushing teeth each time. |
| D．Eat lots of fruit and vegetables and drink water instead of soda. |
Teeth are important. Strong, healthy teeth help you chew all kinds of foods that help you grow. They help you speak clearly. And yes, they help you look your best. Here are some tips for you to take care of your teeth.
【小题1】How many times at least should we brush our teeth a day?
| A．1. | B．2. | C．3. | D．4. |
| A．Not brushing teeth. | B．Not changing toothbrushes. |
| C．Eating sugar. | D．Not flossing teeth. |
| A．Never. | B．Three times a month. |
| C．Every three months. | D．Every month. |
| A．hard | B．soft. | C．expensive. | D．not mentioned. |
| A．Only brush front teeth. |
| B．Don’t brush teeth before sleeping. |
| C．Spend at most three minutes brushing teeth each time. |
| D．Eat lots of fruit and vegetables and drink water instead of soda. |
