1 . The city of Petra, ______ carvings were intricately carved into red sandstone cliffs, was once the capital of the Nabataean Kingdom.

A．where

B．when

C．that

D．what

2 . The Pyramids of Giza, ______ are the last surviving members of the Seven Wonders of the Ancient World.

A．that

B．where

C．which

D．whose

3 . The Acropolis in Athens, ______ was built during the 5th century BC, is an iconic symbol of ancient Greek civilization.

A．when

B．that

C．which

D．whose

4 . Black holes________not be seen directly so determining the number of them is a tough task.

A．can

B．should

C．must

D．need

5 . Peter immersed himself in learning day in and day out. As__________, he was admitted into a key university eventually.

A．astonished

B．anticipated

C．advertised

D．arisen

6 . A: Did you hear that three people died in a fire last night?
B: What a terrible         ! How did it happen?

A．accident

B．incident

C．occasion

7 . A: Have you treated any real emergencies in your first-aid course at the Red Cross?
B: Well, they let us ride along with some paramedics. Once, we gave first aid to a          of a traffic accident before rushing him to the hospital.

A．victim

B．patient

C．sufferer

8 . A: Can I see you for a moment?
B: Is it a matter of           ?

A．urgency

B．emergency

C．seriousness

9 . A: The price for this car? Fifteen thousand dollars out the door! What a deal!
B: Well, if the car hadn’t been in an accident, that would be a good price, but it has a few ________ problems.
(Which option is not suitable?)

A．slight

B．minor

C．tiny

10 . The United States rose to global power on the strength of its technology, and the lifeblood of that technology has long been electricity. ________________

A．力量，力气

B．实力

C．优点；长处