—I’ve heard scientists have drawn a map of the complete ________ of the moon. That’s amazing!
—Exactly. It took 10 years to make it.
A.sense B.situation C.surface D.standard
—People should still keep a social distance these days.
—Yes. A large number of masks ________ in the following months.
A.needed B.are needed C.were needed D.will be needed
Cao Yuan, a young Chinese scientist, has ________ the world with his papers published in Nature, a world-famous science magazine.
A.supposed B.surprised C.succeeded D.suggested
— Do you know a new shopping mall opened in our town yesterday?
— Yes. Why don’t we pay a visit________we have time?
A.until B.since C.unless D.though
Fewer babies are born in China these years. This is ________ because today’s young people have different ideas about becoming parents.
A.mainly B.closely C.hardly D.specially
— How is the online concert One World: Together at Home?
— It can’t be________. I am really touched by it.
A.bad B.good C.worse D.better
