题目

In nowadays, people tend to get married late. Does it have advantage or disadvantage? Different people have different opinions. Now let’s have a look at a related study about Americans. A study has found that marrying later in life is generally financially beneficial for women, but not for men. The University of Virginia has published a report that college-educated women who get married in their thirties earn an average of 56 percent more than those who get married a decade earlier. It reported that men who settle down in their twenties have higher incomes than those who wait until 甲数是a，它比乙数的2倍多3，表示乙数的式子是（ ）。A.2a＋3B.a÷2－3C.（a＋3）÷2D.（a－3）÷2