1 . The scientists ________to global warming at least three times in his speech.

A．referred

B．stuck

C．preferred

D．added

2 . Life in the following ______ time may be harder than before, but everyone should stick to his goals and make an effort to achieve them.

A．three-months

B．three month

C．three months

D．three months’

4 . Don't ______ your notes too often when you give a speech, or your speech will not be impressive.

A．stick to

B．refer to

C．get to

D．point to

5 . You can’t ____ your book when you are in the exam. Otherwise, you will be punished.

A．stick to

B．refer to

C．look up

D．point to

6 . I’m sorry, but I can’t go with you to the cinema because I have to ______ my sick brother.

A．refer to

B．attend to

C．lead to

D．stick to

7 . After arriving in the United Sates, this 20-year-old Chinese student found it rather difficult to ____ living on his own.

A．rely on

B．adjust to

C．depend on

D．stick to

8 . Once a decision has been made, all of us should ______ it.

A．direct to	B．stick to
C．lead to	D．refer to