Although Zhong Nanshan knows the new virus is more____ to old people, he cares little for his own safety.( )
A.politeB.dangerousC.friendlyD.important
Li Lei and his cousin made some zongzi by ________ during the Dragon Boat Festival.( )
A.themB.theyC.themselves
The Chinese survey team remeasured(重新测量)Qomolangma successfully ________ May 27,2020.( )
A.inB.onC.at
We don't know ______,but it tells us the importance of friendship.( )
A.what the story is about
B.whether the story is true
C.when did the story take place
As one of the most exciting sports,volleyball ______ in the Olympic Games in 1964.( )
A.includedB.is included
C.was included
Du Fuguo is a hero ______ is known to millions of Chinese people.( )
A.whoB.whichC.what