两种气态烷烃的混合物，在标准状况下其密度为1.03 g·L-1 ，则关于该混合物组
成的说法正确的是（ ）
| A．一定有甲烷 | B．一定有乙烷 |
| C．不可能是甲烷和乙烷的混合物 | D．可能是乙烷和丙烷的混合物 |
相关试题
The children loved their day trip, and they enjoyed the horse ride ______.
| A．most | B．more | C．less | D．little |
Progress______ so far very good and we are sure that the work will be finished on time.
| A．was | B．had been | C．has been | D．will be |
Charles was alone at home, with_______ looking after him.
| A．someone | B．anyone | C．not one | D．no one |
It is often ______ that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |
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