Select the antonym of the following bold and underlined word in each sentence in the unit:
Man and most animals need a constant supply of water to live.
A.A. fitful
B.B. faithless
C.C. uncertain
D.D. weak

Select the synonym of the following bold and underlined word in each sentence in the unit:
The loss of much forest is destroying Earth’s plant and animal variety.
A.A. change
B.B. kind
C.C. type
D.D. collection

Choose the word whose main stress is placed differently from the others in each group:
A.A. vegetation
B.B. eliminate
C.C. disappearance
D.D. intonation

He left a message so that I could know where to find him.
A.He left a message, which I knew where to find.
B.I could know where to find him, so he left a message.
C.He left a message, because I knew where to find him.
D.I could know where to find him thanks to the message he left.

Choose the word whose underlined part has a different pronunciation from the others in each group:
A.A. pollute
B.B. develop
C.C. constant
D.D. provide

Flooding in this region was the result of heavy rain.
A.Flooding in this region was the cause of the heavy rain.
B.Heavy rain causes flooding in this region.
C.Heavy rain resulted in flooding in this region.
D.Because of flooding in this region, there was heavy rain.

I regret giving Dennis my phone number.
A.I should have given Dennis my phone number.
B.If only I had given Dennis my phone number.
C.If only I had not given Dennis my phone' number.
D.I wish I could give Dennis my phone number.

Sam speaks Chinese well and his Japanese is good, too.
A.Sam not only speaks Chinese well but also is good at Japanese.
B.Not only does Sam speak Chinese but also Japanese well.
C.Not only Chinese but also Japanese Sam is good at.
D.Sam is good at either Chinese or Japanese.

Which of the following is NOT caused by fog?
A.Shutdowns at airports.
B.Temperature losses.
C.Tankers’ crash
D.Pile-up accidents.

Which is NOT true of the frontal fog?
A.The warm front has rain falling into the colder front.
B.The air is soaked.
C.It forms when two fronts of different temperatures meet.
D.It is quite common.