What does They (Carbon nanotubes) burn their way through cancer mean in Paragraph 12?

A、electronic chart display and indication system B、electronic chart display and information system C、electric chart display and informing system D、electronic chart display and indicating system

A . He is cleaning the street B . He is forty C . He is a farmer D . He is all right

A . They shouldn’t change their plan． B . They should change their mind． C . Weather forecasts are not reliable． D . The tennis game won’t last long．

A . Effective even if ventilation is not shut down B . Will not deteriorate in storage C . Non-corrosive D . Effective on electrical equipment

A．Silicate rocks are largely composed of carbon dioxide. B．Silicate rocks contribute to the creation of carbon dioxide. C．The erosion of silicate rocks reduces carbon-dioxide levels in the atmosphere. D．The formation of silicate rocks removes carbon dioxide from the oceans. 此题为多项选择题。

A．Right B．Wrong C．Not mentioned

What does the word "they" (Para. 3) refer to？ A．the layers B．wind-blow]a deposits C．volcanic eruptions D．the terrestrial rocks

A．People. B．Shops. C．Goods. D．Catalogue.

A．Technologies for carbon reduction in all industries, including aviation, do not exist yet. B．Technologies are not available for carbon reduction with the current aircraft models. C．Technologies designed to cut pollution from electricity generation and from air travel are not the same. D．Technologies to cut carbon from power plants cannot be used to cut carbon from planes.

A．The man should have offered his assistance earlier. B．She doesn't need the man's help. C．She didn't realize the boxes were empty. D．She wants the man to move the boxes.

A．To illustrate methane's molecular structure. B．To show the link between global warming and smog. C．To suggest that fossil fuels should not be burned. D．To elaborate on a benefit of natural gas's cleanliness.

What does the word “they” (Para. 3, Line 3) refer to？ A) The animal-protecting organizations. B) The organizations that will talk with the research community. C) Those who support the use of animals in research. D) Those who support the animal-protection organizations.

A．The apples and pears might not be so good. B．The apples are not as good as the pears. C．The apples and pears are very good. D．The apples and pears are as good as they look.

A．Hockey fans and researchers. B．Students in Beardsley's class. C．Producers of the TV program. D．Viewers of the ESPN program.

A．Problems. B．Experts. C．Dreams.

What does the word "they"(Para. 3) refer to？ A．the layers B．wind-blown deposits C．volcanic eruptions D．the terrestrial rocks

A．She has completed most of the research that was required for her project． B．She has not done much research yet and so does not mind changing the focus of her project． C．She is disappointed that the professor is unfamiliar with her research topiC D．She believes public schools in the northeastern states were only slightly changed due to immigration．

A．4 B．5 C．6 D．7 E．8