[单项选择]Sinking B. Reduction C. Dropping D. Depression


A. Dropping
B. Depression
C. Sinking
D. Reduction

[单项选择]Sinking B. Reduction C. Dropping D. Depression

[单项选择]Why is Venice san sinking
A. Because people only stop using underground water for industries on the mainland.
B. Because people still make use of the underground water for all purposes.
C. Because the use of groundwater far industries on the mainland has been stopped.
D. Because people do not use the underground water any more.

[单项选择]Even today when discussing the sinking of Titanic, survivors tend to speak __________ of the ordeal.


A. solemnly
B. genuinely
C. furiously
D. deliberately

[单项选择]Why does the author say the sinking of the Wilhelm Gustloff was the worst tragedy in maritime history


A. It was attacked by Russian torpedoes.
B. Most of its passengers were frozen to death.
C. Its victims were mostly women and children.
D. It caused the largest number of casualties.

[单项选择]

In his 1979 book, The Sinking Ark, biologist Norman Myers estimated that (1) of more than 100 human-caused extinctions occur each day, and that one million species (2) by the century’s end. Yet there is little evidence of (3) that number of extinctions. For example, only seven species on the (4) species list have become extinct (5) the list was created in 1973.
Bio (6) is an important value, according to many scientists. Nevertheless, the supposed mass extinction rates bandied about are (7) by multiplying (8) by improbables to get imponderables.
Many estimates, for instance, rely a great deal on a "species-area (9) ", which predicts that twice as many species will be found on 100 square miles (10) on ten square miles. The problem is that species am not distributed (11) , so how much of a forest am destroyed may be as important as (12) .
(13) , says Ar
A. distorted
B. achieved
C. magnified
D. overstated