In order to cut down on the carbon emission，more people choose to travel______.

A．by electric car，bicycle or plane

B．by private car，bicycle or bus

C．by bus，electric car or plane

D．by bicycle. bus or electric car

89 percent carbon emissions could be cut by 2059 from a business-as-usual_____.（

Most employers are planning to cut down on wages instead of laying off employees

[单选题]Unable to break down the opposition,the president had to resign to bring or

One had to quit abruptly on a given day, going from about a pack a day to zero.

One had to quit abruptly on a given day, going from about a pack a day to zero.

[单选题]Carbon is an element， while carbon dioxide is a( )A.materialB.substanceC.or

[单选题]Carbon is( )， while carbon dioxide is a compound.A.a materialB.a substanceC

如果执行检索式carbon-emission,可以同时检索出包含词组“carbon emission”和“carbon emissions”的文献信息 如果执

[单选题]One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space isA．the 'snow' which is sometimes discharged along with the gas is toxicB．prolonged exposure to high concentrations of CO2 gas causes suffocationC．rapid diss

[单选题]The carbon deposits on the piston crown and in the ring grooves （）.A . should be scrapedB . should be derustedC . should be drilled outD . to be brushed off