单选题What does the underlined word ―optimistic mean?ALucky and happy.BHopeful and confident.CHelpful and creative.DThankful and popular.

单选题
What does the underlined word ―optimistic mean?
A

Lucky and happy.

B

Hopeful and confident.

C

Helpful and creative.

D

Thankful and popular.


参考解析

解析:
分析推断题。第二段画线单词后面的内容是对“optimistic”的解释。该部分主要阐述了Star Trek里面未来生活的变化,以及给人们生活带来的便利。因此,选择B项,意为“有希望的和有信心的”。

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