完型填空

Climate change is one of the most fundamental challenges ever to confront humanity. Its impacts are already showing and will intensify over time __21__ left unchecked. There is overwhelming scientific evidence, __22__ shown in the Fourth Assessment Report of the Intergovernmental Panel on Climate Change政府间气候变化专门委员会, that climate change will threaten __23__ growth and long-term prosperity, as well as the very survival of the most vulnerable populations. IPCC projections indicate that if emissions continue to rise at their current __24__ and are allowed to double from their pre-industrial level, the world will face an average temperature__25__ of around 3C this century. Serious impacts are associated __26__ this scenario , including sea-level rise, shifts in growing seasons, and an __27__ frequency and intensity of extreme weather events such as storms, floods and droughts.

The United Nations Climate Change Conference in Copenhagen in December in 2009 offers a __28__ opportunity to step up international action on climate change. A Copenhagen deal is __29__ the global transition into green economic growth, and, most urgently, to help the world, especially the most vulnerable, to adapt to impacts __30__ are now inevitable.

、

A：if

B：whether

C：when

D：which

答案： A

、

A：because

B：as

C：while

D：when

答案： B

、

A：economics

B：economical

C：economy

D：economic

答案： D

、

A：speed

B：rate

C：pace

D：rhythm

答案： C

、

A：rising

B：rise

C：raise

D：raising

答案： B

、

A：with

B：to

C：from

D：in

答案： A

、

A：being increased

B：increased

C：increase

D：increasing

答案： D

、

A：history

B：historical

C：historic

D：historically

答案： B

、

A：necessary

B：inevitable

C：essential

D：basic

答案： C

、

A：that

B：of which

C：who

D：what

答案： A