The "white chalk cliffs of Dover" are mentioned in line 14 of the passage to（） A: show where the plankton sediment first began to build up B: provide an example of a plankton buildup that scientists cannot explain C: provide all example of the buildup of plankton sediment D: indicate the largest single plankton buildup on Earth

Inthefiftieslastcenturymanynewcities（）inthedesert A: bringup B: makeup C: grewup D: buildup

What does the sentence " There has been a long-term buildup to this problem." in Para. 4 mean?

含有“增加”的英文短语:_______ A: buildup B: moreandmore C: pileup D: stepup

We've all paid a ___ bill or purchased gasoline. A: buildup B: contributor C: component D: utility

9) It (inevitably) will increase the emission of carbon dioxide and so hasten the buildup of greenhouse gases in the atmosphere. A: unavoidably B: certainly C: accidentally

Combustion knock occurring in a diesel engine can be caused by _____. A.low coolant temperature B.insufficient fuel C.high ambient temperature D.carbon buildup on the injector tips

a portion of food A: bane B: curb C: buildup D: hydrogenated E: temptation F: serving G: trans fat H: H. cardiovascular I: I. hospitalize J: J. restriction

to place in a hospital as a patient A: bane B: curb C: buildup D: hydrogenated E: temptation F: serving G: trans fat H: H. cardiovascular I: I. hospitalize J: J. restriction

something causing misery or death A: bane B: curb C: buildup D: hydrogenated E: temptation F: serving G: trans fat H: H. cardiovascular I: I. hospitalize J: J. restriction