Two thirds of the ice in the glaciers（冰川） of the Alps is doomed!These glaciers will melt by the end of the century as global temperatures rise，according to a recent study.
   Scientists claim that half the ice held in some 4，000 Alpine glaciers will disappear by 2050 due to global warming through the effect of past emissions.After that，even if carbon emissions drop to zero，two-thirds of the ice will still have melted by 2100.If emissions continue to rise at the current rate，the ice tongues will have all but disappeared from Alpine valleys by the end of the century.The most pessimistic prediction tells us that the Alps will be mostly ice-free by 2100.Only isolated ice patches would remain at high altitudes，representing five per cent，at most，of the ice volume seen today.
   The researchers warn that the loss of these glaciers will mean much less water is available for farming and hydroelectricity，especially during droughts.It would also affect nature and tourism.
   In February，a study found that a third of the huge ice fields in Asia's towering mountain chains were also under threat for the same reasons.This will lead to serious consequences for almost two billion people who live downstream.Glaciers along the Hindu Kush and Himalayan range are at higher，colder altitudes.If global carbon emissions are not cut，however，two-thirds of their ice could be gone by 2100.
   The latest research combined computer models with real-world data to forecast the fate of the glaciers.It used 2017 as its starting point.Unlike previous work，these models included how the glaciers move down the mountains.Applying this approach to other glaciated mountain chains could improve ice loss forecasts there.
   Cutting the emissions from fossil-fuel burning，deforestation and other polluting activities is the biggest factor in minimizing the melting of the ice.The future of these glaciers is indeed at risk，but there is still a possibility of limiting their disappearance.

（1）What does the underlined word "doomed"mean in paragraph 1？

C

C

A．Polluted.
B．Discovered.
C．Endangered.
D．Abandoned.
（2）What can we infer from paragraph 2？

A

A

A．Emissions have much to do with the ice melting.
B．The Alps is expected to lose all its ice by 2100.
C．Ice loss will be avoided with emissions prevented.
D．Large ice pieces will just exist at the mountain top.
（3）Why are the Asia's ice fields mentioned in paragraph 4？

D

D

A．To explain how glacier melting came about.
B．To imply pollution is a worldwide problem.
C．To show what consequences ice melting will cause.
D．To indicate the Alps is not alone to face ice melting.
（4）What is the writer' s attitude towards the future of glaciers？

A

A

A．Objective.
B．Optimistic.
C．Critical.
D．Doubtful.