Lawrence Craven, a doctor from the USA, is the author of several published reports, one of ________ introduced the idea in 1953 ________ aspirin could reduce the risk of heart attacks.
| A．them; when | B．which; that |
| C．what; that | D．which; when |
相关试题
—Sorry, do you mind if I smoke here?
—Yes, _______.
| A．you could | B．go ahead | C．I do | D．my pleasure |
It’s the first time that he has been to Australia, _______ ?
| A．isn’t he | B．hasn’t he | C．isn’t it | D．hasn’t it |
Peter’s jacket looked just the same as Jack’s, but it cost _____ his.
| A．as much twice as | B．twice as much as |
| C．much as twice as | D．as twice much as |
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