The earliest mobile phone viruses were called ____

1The main idea of this passage is how to _____ .
A.save water and electricity
B.protect the earth
C.make better use of old things
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2Which of the following is WRONG according to the writer、
A.Give your old clothes to the poor children.
B.Close the doors in winter.
C.Use a paper cup when you brush your teeth.
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3We can_____ to save paper.
A.use a paper cup
B.throw old books away
C.use both sides of paper
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4The writer tells us _____
A.to pour dirty water into the rivers
B.to throw litter into a dustbin
C.to save water by letting it run while we are brushing our teeth
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5From the above, we know that this is_____
A.a proposal (倡议书)
B.a poster
C.an ad
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6The earliest mobile phone viruses _____
A.were dangerous
B.were not dangerous
C.made phones stop working
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7What does the underlined word "multimedia" mean、
A.Photos, videos and sound.
B.Photos and videos.
C.Pocket computer.
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8How is the newest virus spread、
A.By playing games on phones.
B.By opening multimedia messages.
C.By calling expensive phone numbers.
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9What are mobile phone companies doing to stop viruses、
A.They are making fewer new phones.
B.They are putting anti-virus software on new phones.
C.They are improving mobile technology.
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The earliest mobile phone viruses were called _____