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问题 选择题

.反应的叙述中，正确的是

A．氧化剂是SiO2

B．氧化剂与还原剂的物质的量之比为1:2

C．碳在反应中只做还原剂

D．若生成lmolSiC转移电子为2mol

答案

答案：B

正确答案：B

碳既是氧化剂，又是还原剂，且氧化剂与还原剂的物质的量之比为1:2，生成lmolSiC转移电子为4mol

阅读理解

阅读理解。

    My uncle Scott is a music teacher. He gets up early every day. He usually gets up at five o'clock in the morning. After he brushes his teeth, he often plays baseball with my aunt. Then he has his breakfast. After

that, he often plays the violin. At about seven fifty he takes the number 6 bus to his school.

    He has no classes on Thursday and Friday. He usually goes to the violin club. There he helps kids with

the violin. Oh, my uncle plays the violin very well. Do you love to play the violin? Do you want to join the

violin club? Please call my uncle at 326 -6789.

根据短文判断下列句子的正（T）误（F） 。

( )1. My aunt is a music teacher.

(     )2. Scott often plays the violin after breakfast.

(     )3. Please call 326 - 6789 if you want to join the violin club.                  -

(     )4. On Thursday and Friday Scott usually goes to the' violin club.

(     )5. Scott can't play the violin very well.
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单项选择题

形成出血的病机是（）

A．气虚

B．血热

C．二者均是

D．二者均非
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