______ is of vital importance that we ______ something to protect our precious cultural heritage.
A.It, do B.What, did C.That, should do D.Whether, will do
I have spared no efforts to remember the words, but all my work was______.
A.in response B.in decline C.in return D.in vain
______ the late 18th century did the British explorer James Cook cross the Antarctica Circle, ______he never saw land.
A.Until, while B.Since, and C.Not until, but D.Although, yet
5G technology will ______ 15.2 trillion yuan _______ China’s digital industry between 2020 and 2025, Science and Technology Daily reported on August 28.
A.contribute, to B.adjust, to C.leave, behind D.balance, against
Architects preferred _______ buildings with more light, which_______ with the heaviness of the Gothic cathedrals of the Middle ages.
A.to design, contrasts B.designing, contrasting
C.to design, to contrast D.designing, contrasted
The plant, ______ to Indonesia, grows well in hot, humid climates.
A.apparent B.native C.primitive D.diverse
