单选题 There are about 75 brands of microwave popcorn on the market; altogether, they account for a little over half of the money from sales of microwave food products. It takes three minutes to pop corn in the microwave, compared to seven minutes to pop corn conventionally. Yet by weight, microwave popcorn typically costs over five times as much as conventional popcorn. Judging by the popularity of microwave popcorn, many people are willing to pay a high price for just a little additional convenience.
If the statements in the passage are true, which one of the following must also be true?

A、 No single brand of microwave popcorn accounts for a large share of microwave food product sales.
B、 There are more brands of microwave popcorn on the market than there are of any other microwave food product.
C、 By volume, more microwave popcorn is sold than is conventional popcorn.
D、 More money is spent on microwave food products that take three minutes or less to cook than on microwave food products that take longer to cook.
E、 (E) Of the total number of microwave food products on the market, most are microwave popcorn products.

【正确答案】 D

【答案解析】[解析] 本题为归纳题型，结合段落的第一句话与第二句话，可以很容易知道花费在用三分钟或更少的时间来烹调的微波食品上的钱多于其他方面所花费的钱，所以本题的(D)是很明显的正确答案；短文中只是说75个品牌的微波爆米花的销售额占总微波食品销售额的一半多一点，但这并不能推出微波爆米花食品的数量较多，因为若微波爆米花的价钱较其他食品贵时，它也可在较少的销售数量的基础上占有较大的销售额，所以选项(E)是不一定正确的；同理可以推出选项(A)、(B)和(C)均有不正确的可能性。