1 . Which of the following words has a different sound from the underlined letters of the word “thick”?

A．truth

B．breathe

C．throat

2 . In the following words, which underlined letters have a different sound from the others?

A．breathe

B．throat

C．birth

3 . Which pair of the words with the underlined letters has the same sound?

A．headache break

B．throat boat

C．cough trouble

4 . Which of the following words has the same sound as the underlined letters of the word “theme”?

A．though

B．southern

C．throat

5 . In the following words, which underlined letters have a different sound from the others?

A．breathe

B．throat

C．three

6 . — Where are you going, Tom?
— I have a ________. I want to see a dentist.

A．throat

B．toothache

C．cold

7 . In the following words, which underlined (划线的) letters have a different sound from the others?

A．brother

B．throat

C．them