下列说法或表示方法正确的是
| A．等质量的硫蒸气和硫固体分别完全燃烧生成等量二氧化硫时放出的热量相同 |
| B．由C(金刚石，s)＝C(石墨，s)△H＝－1.90 kJ·mol-1,可知石墨比金刚石稳定 |
| C．氢气的燃烧及氢气还原氧化铜的反应都是放热反应 |
| D．1mol甲烷燃烧生成气态水和二氧化碳所放出的热量是甲烷的燃烧热 |
What I need is_____ book that contains ______ABC of oil painting.
| A．a; 不填 | B．the; 不填 | C．the; an | D．a ; the |
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free. 
| A． | other | B． | others | C． | one | D． | ones |
I’m sure that your letter will get______ attention. They know you’re waiting for the reply. 
| A．continued | B．immediate | C．careful | D．general |
All the dishes in this menu, ______ otherwise stated, will serve two to three people. 
| A．as | B．if | C．though | D．unless |