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2.对于化学反应方向的确定,下列说法正确的是

     A.温度、压力一定时,放热的、熵减小的反应一定能自发进行

     B.温度、压力一定时,焓因素和熵因素共同决定一个化学反应的方向

     C.反应焓变是决定反应能否进行的唯一因素

     D.固体的溶解过程与熵变无关

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1.下列关于能量转换的认识中不正确的是

     A.电解水生成氢气和氧气时,电能转化成化学能

     B.煤燃烧时化学能主要转变成热能

     C.绿色植物光合作用过程中光能转变成化学能

     D.白炽灯工作时电能转变化学能

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13、----My family usually goes skating for vacation.I like skating,but I want to try something different this year.

----   

A、Let’s go.   B、Cheer up.    C、Like what?      D、Take care.

1-----5CDACD     6-----10BCDCD    11----13CCC

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12、----Why didn’t you turn up at the meeting?

----I    for a long-distance call from my cousin in England.

A、waited   B、had waited    C、was waiting    D、have been waiting

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11、----You couldn’t have chosen any gift better for me.

----   

A、Oh,don’t you like it?          B、That’s all right.    

C、I’m glad you like it so much.      D、You have a gift for music,don’t you?

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10、----Hello,Mr.Smith.This is Larry Jackson.I am afraid I won’t be able to arrive on time for the meeting in your office.

----    .We’ll wait for you.

A、Hurry up   B、No doubt    C、Cheer up    D、That’s all right

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9、----   John come here tonight?

----I’m not sure,but he   stay at home.

A、Can;must   B、Must;might   C、Can;might    D、May;might

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8、----Would you mind if I turn the radio a little up?

----    .

A、Of course,I do    B、Yes,you may    C、Sure,go ahead    D、No,go ahead

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7、----Would you agree with what I said just now?

----   

A、Who cares?   B、Never.   C、You took the words right out of my mouth.

D、I don’t know whether it’ll work or not.

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6、----People should stop using their cars and start using public transport.

----    .The roads are too crowded as it is.

A、All right   B、Exactly   C、Go ahead    D、Fine

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