______ during the war, the airport has never been used again.A.Has damagedB.Having damaged
______ during the war, the airport has never been used again.
A.Has damaged
B.Having damaged
C.Has been damaged
D.Having been damaged
______ during the war, the airport has never been used again.
A.Has damaged
B.Having damaged
C.Has been damaged
D.Having been damaged
When she was busy tidying the room, her little kid is always ______.
A.under way
B.on the way
C.in the way
D.by the way
First basketball teams were formed ______.
A.around 1898
B.in 1891
C.at the time when YMCA was established
D.when Naismith came to the YMCA training school
According to the text, the White House
A.has acknowledged its fault.
B.didn't receive the warning of the hijacking.
C.warned its departments of the new attack.
D.was unable to assess the situation correctly.
某组分在色谱中分配到固定相中的量为WA(g),分配到流动相中的量为WB(g),该组分在固定相中的浓度为cA(g/mL),在流动相中的浓度为CB(g/mL),则该组分的分配比为()。
A.CA/CB
B.CB/CA
C.WA/WB
D.而WA/WA+WB
Not only ______ polluted, but ______ crowded.
A.was the city, were the streets
B.the city was, the streets were
C.was the city, the streets were
D.the city was, the streets were
Which of the following would be the best title for the text?
[A] Strain of Stress: No Way Out?
[B] Responses to Stress: Gender Difference
[C] Stress Analysis: What Chemicals Say
[D] Gender Inequality: Women Under Stress
—What's up? —Such a noise ______ that I couldn't go on with my work.
A.in the room there was
B.there is in the room
C.was there in the room
D.is there in the room
Not until______ did Tom learn the story about his father.
A.they had left the house
B.the war was over
C.it was time for them to leave the house
D.the old man thought of his son
The auctioneer may decide to sell the "lots" out of order because ______.
A.he sometimes wants to confuse the buyers
B.he knows from experience that certain people will want to buy certain items
C.he wants to keep certain people waiting
D.he wants to reduce the number of buyers