题目

For each blank in thefollowing passage there are four words or phrases marked A, B, C and D. Fill ineach blank with the word or phrase that best fits the context. When Elinor Ostrom won the Nobel Prize for her research oneconomic governance in 2009, it was the first (and so far, the only) time awoman won a Nobel for Economics. That prize has 1 for nearly 50 years. We don't do a great jobof recognizing women's contributions to science and innovation. My colleaguesand I wondered: Is one of the reasons why women are more likely to 2 science than men because they don't receivethe same recognition?有一个数，它比20小又是偶数，它有因数3，又是4的倍数，这个数是 [　　] A．6 B．8 C．18 D．12