It is so urgent that you have to start immediately.A．lastly B．shortly C．recently

Which of the following statements is true of Opportunity?A．It will come back to

One of the objectives of sending Opportunity and Spirit is toA．collect soil and

What does John Callas say about Opportunity’s long distance travel?A．It hasn’t m

根据下面材料，回答题。第三篇　A Record-Breaking RoverNASA’s Mars rover Opportunity has boldly g

The largest warming effects happened in the Northern Hemisphere withA．X sea ice

What is the main cause of climate warming during the past century?A．Soot. B．Snow

Which of the following areas shows a greater warming effect?A．Ice sea areas. B．A

The function of the word "Traditionally" in Paragraph 2 is to show_____. A．the p

The result of the research can help computers to increase ____________A．optical

根据下面材料，回答题。New research lights the way to super-fast computers1)New research pub

The women with high levels of PAHs in their blood were more likely to have kids

Kids with ADHD commonly fail in school.A．Right B．Wrong C．Not mentioned

The blood of each women was tested once a month during pregnancy.A．Right B．Wrong

Nonsmoking mothers were selected because the effect of smoking on PAHs was uncle

The main purpose of the research was to find out how exposure to PAHs played a r

Railways are the most important mode of transport for the economy.A．way B．factor

He tried to assemble his thoughts.A．gather B．clear C．share D．spare

I realized to my horror that I had forgotten the present.A．limit B．fear C．power

It frustrates me that I’m not able to put any of my ideas into practice.A．discou

_____A．cut B．drop C．broke D．turned

_____A．in B．at C．with D．out

_____A．Loud B．peaceful C．classic D．easy

_____A．trouble B．time C．fear D．pleasure

根据材料，回答题。I'll  Be Bach Composer David Cope is the inventor of a computer  progra