1 . The Caspian Sea is ________ salt lake in the world.

A．deep

B．deeper

C．deepest

D．the deepest

2 . China is ________ (safe) country I have ever known.

3 . Tim is ________ player in the school basketball team, but he is the best.

A．short

B．shorter

C．shortest

D．the shortest

4 . The electric light bulb (电灯泡), one of ________ best-known inventions by Edison, has made ________ big difference to the world.

A．the; /

B．/; /

C．/; a

D．the; a

5 . The giraffe is one of ________ animals in the world.

A．tall

B．taller

C．tallest

D．the tallest

6 . 巴黎是世界上最美的城市之一。 (Translate the sentence.)
_________________________________________________.

7 . The highest temperature is 32℃ and the ________ (low) temperature is 19℃ today.

8 . It’s one of the ________ (happy) things in the world to stay with friends.

9 . I think this is ________ film I ________.

A．the best, saw

B．the best, have seen

C．a better, have seen

D．the better, saw

10 . 这是我曾经看过的最有趣的电影。
This is ________ movie that I have ever seen.