170. So long as you work hard enough, a(an) _____ rod can be ground into a needle. (prov.)
| A．steel | B．stick | C．gold | D．Iron |
相关试题
Only when you leave your parents for college education _______ how much you love them.
| A．do you realize | B．you realize | C．you will realize | D．will you realize |
The cause he had devoted himself to _______ a perfect success.
| A．proving | B．proved | C．was proved | D．has been proved |
Many experts believe that teachers’ development is _____ the key to better education lies.
| A．that | B．what | C．where | D．which |
Evidence has been piled up_____drinking water after getting up in the morning contributes to one’s health.
| A．what | B．which | C．if | D．that |
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