题目内容

Global warmingis one of the most serious __________ we face.

A. challenge
B. challenging
C. challenges
D. challenged

查看答案

搜索结果不匹配？点我反馈

更多问题

A _________ is a person who gives private instruction.

A. professor
B. tutorial
C. doctor
D. tutor

The company wants toestablish a strong __________image.

A. corporate
B. corporation
C. cooperation
D. cooperated

The lawyer was ignorant of even the most __________ facts.

A. element
B. elemental
C. elementary
D. elements

The accomplishment of the project gave me more _________ and confidence to continue my study.

A. motive
B. motivated
C. motivation
D. motivates