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Not all ads are used to promote a product or to increase a company’s profits. Which is the following statement correct?

A. All the ads are used to promote a product or to increase a company’s profits.

B. Neither of ads are used to promote a product or to increase a company’s profits.

C. Some of ads are used to promote a product or to increase a company’s profits.

D. None of ads are used to promote a product or to increase a company’s profits.

Not all these books are second-hand；　　　 of them are new．

A．a(chǎn)ll　 　　　　 B．none 　　　　C．some　 　　　　 D．each

Not all ads are used to promote a product or to increase a company’s profits. Which is the following statement correct?

Not all these books are second-hand; ________ of them are new.

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