题目内容

n. mineral oil that is found under the ground or the sea and is used to produce petrol/gas, paraffin, diesel oil, etc..

A. opponent
B. nitrogen
C. petroleum
D. masterpiece

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adj. (of a child or young person) behaving in a sensible way, like an adult

A. naval
B. marine
C. mature
D. measurable

v. to change sth. slightly, especially in order to make it more suitable for a particular purpose;

A. persist
B. modify
C. oppose
D. oblige

n. the study of the nature and meaning of the universe and of human life

A. physician
B. philosophy
C. parliament
D. nationality

adj. happening or done sometimes but not often

A. pessimistic
B. occasional
C. optional
D. marvelous