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【单选题】
下列叙述中，正确的是（ ）A.
已知C（石墨，s）═C（金刚石，s）；△H＞O，则金刚石比石墨稳定
B.
对于反应2N0 2 （g） N 2 O 4 （g）△H＜0，升高温度，正逆反应的速率都增大，但正反应的增速大于逆反应增速
C.
已知碳的燃烧热为yKJ/mol，当7.2g的碳在12.8g的氧气中燃烧，至反应物耗尽并放出xKJ的热量，则可求出1mol碳与氧气反应生成一氧化碳时△H=（0.5y-2.5x）KJ/mol
D.
已知2C（s）+20 2（ g）═2C0 2 （g）；△H I 2C（s）+0 2 （g）═2CO（g）；△H 2 则△H I ＞△H 2
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【单选题】— What do you think of earthquake, Zhang Hong? — Terrible. people lost their hometown during the earthquake.
A.
Five thousands
B.
Thousand of
C.
Three thousands of
D.
Thousands of
【单选题】A: What happened to the priceless works of art? B: ______
A.
They were destroyed in the earthquake.
B.
The earthquake was destroying them.
C.
They destroyed in the earthquake.
D.
The earthquake destroyed them.
【单选题】根据下列文章,请回答 16～22 题。 Earthquake How does an earthquake start? What makes an earthquake happen? The rock of the earth's crust (地壳) may have a'fault', a kind of break in the surface. The blocks which mak...
A.
Right
B.
Wrong
C.
Not mentioned
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