12．turn．．．upside down

9．frightened　　 10．Entertainment

7．benefited 8．advantage

5．covers　　 6．filled

3．experiment 4．protected

50．--What made you so angry7

　 ．--_________my house_______saying goodbye.

　　 A．Mary’s leaving；instead of

　　 B．Mary’s left；instead of

　　 C．Mary’s leaving；without

D．Mary’s leaving；instead

高二UNIT13课时检测基础练习key

49．I made several phone calls last night，but nobody answered．You must have fallen asleep，_________?

A．mustn’t you　　 B．can’t you

　C．haven’t you D．weren’t you

48．They found there was_______to weigh such an elephant．

　 A．big enough nothing

　 B．nothing enough big

　 C．enough nothing big

　 D．nothing big enough

47．The Red Army_____ more than 25 000 li and arrived at North Shanxi at last．

　A．walked　　 B．ran C．covered 　D．travel

46．It was in the lab_____was taken charge of by professor Harris_____ they did the experiment．

　 A．which；that 　B．that；what

　 C．whom；that　 D．which；where