Whats "cell phone" which is in American English in British English？A．Cellular phone.B．Mobi

The future global communications network will be completely free of______.

A．any breakdown

B．costs

C．towers and masts

D．manual operation

the passage?

A．To monitor light.

B．To change color.

C．To show movies.

D．To play music.

Whats the central topic of the passage?

A．IT-platform.

B．Visual log.

C．Voice communication.

D．Telecoms.

Where did the mathematician Archimedes mentioned in Paragraph 4 come from?

A．Ancient Greek.

B．Ancient Roman.

C．Ancient Egypt.

D．Ancient Israel.

Which of the following is INCORRECT according to the passage?

A．Fields Medal was first awarded in 1936 before Fields" death.

B．Fields Medal is a golden medal.

C．Fields Medal is often referred to as the "Nobel Prize for Mathematics".

D．Fields Medal is awarded to mathematicians under the age of 40.

Fields is mainly remembered for______.

A．the first winner of the Fields Medal

B．the president of the 6th International Congress of Mathematicians

C．his achievement in the theory of algebraic functions

D．the founder of an international medal for mathematical distinction

The Fields Medals are presented every______years.

A．two

B．four

C．three

D．five

Which of the following may be the best title for the passage?

A．Fields Medal: the "Noble Prize for Mathematics"

B．John Charles Fields, the Great Mathematician

C．Noble Prize for Mathematics

D．John Charles Fields and Fields Medal

What is the main idea of the passage?

A．Ice covers have been diminishing for the past decade.

B．It is DOD drone that monitors geologic changes.

C．Steiner"s annual voyages bear witness to the Arctic crisis.

D．Ice-melting is creating an accelerating warming loop.

Which of the following is CORRECT according to this passage?

A．Scientists have already got statistics to prove Arctic crisis.

B．2009 is even worse than 2007 in terms of ice-melting.

C．Mile after mile of warm ocean water tells us some minor changes are happening there.

D．We can know the exact thickness of the ice and water temperatures from satellite images.