It can be inferred from the passage that the author's opinion of nowadays' human beings is ______.
A. not very high
B. high
C. contemptuous
D. critical
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The chief reason for the population growth isn't so much a rise in birth rates a fall in death rates as a result of improvements in medical care.
A. but
B. or
C. as
D. and
Remember to ask for a ______ of quality for these goods; otherwise they will not offer any maintenance.
A. certificate
B. receipt
C. warranty
D. mark
Put on more clothes, ______ you will catch cold.
A. or rather
B. on the contrary
C. in no way
D. or else
To what extent will the rising crude prices affect the U. S. trade deficit
A. Scarcely.
B. Greatly.
C. Very little.
Definitely.