According to the passage, the numerical value of the concentration level of a substance is only useful if _______.
A.the other substances in the area are known
B.it is in a localized area
C.the natural level is also known
D.it can be calculated quickly

The word "noxious" in the third paragraph is closest in meaning to__________.
A.poisonous
B.natural
C.known
D.essential

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
All births, deaths and marriages are entered in the _______ records. Most of these records have been computerized in recent years.
A.national
B.social
C.official
D.internal

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
At the end of the training course, each participant was presented with a ______ of completion.
A.degree
B.certificate
C.diploma
D.qualification

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The ______ high levels of pollution in the coastal areas are a matter of great concern to the government.
A.redundantly
B.intensively
C.marginally
D.excessively

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
It is the recommendation of many counselors _____ that their survival is attributed to their true love.
A.that Katniss convince the Mayor
B.that Katniss convinces the Capitol
C.the Capitol is convinced
D.that Katniss must convince the Capitol

(67.______)
A.amounts
B.much
C.little
D.numbers

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
I’ve just bought a __________ mobile phone at a shop near my house.
A.yellow new Chinese
B.Chinese new yellow
C.new yellow Chinese
D.new Japanese yellow

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The biologists have found more than one thousand types of butterflies in the forest, ______ its special characteristics.
A.each one has
B.which has
C.each having
D.having

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
The new secretary is really asking for trouble, ______ the boss’s requests like that.
A.to ignore
B.ignore
C.is ignoring
D.ignoring