package.

如你所知，我们的雪人牌冰淇淋的销售量自从换了包装就成倍增加。

(2)Rabbits multiply quickly.

兔子繁殖很快。

(3)Four multiplied by five is twenty.

五乘以四得二十。

[归纳拓展]

(1)multiply vt.& vi.成倍增加，迅速增加；乘；使繁殖

(2)multiple adj.多种多样的

multiple choice多项选择

(3)multiplicity n.多种多样 [即时跟踪]

(1)Think it over，and we'll multiply our chances of success.

再三考虑一下，我们就会增加成功的机会。

(2)As we climbed up the mountain，the dangers and difficulties multiplied.

我们越向山顶攀爬，危险和困难越是倍增。

(3)With your efforts ， you are more likely to achieve your goal.

A.multiplying B.multiplied

C.are multiplying D.multiply

答案　 B

解析　本题考查非谓语动词。multiply与effort之间是动宾关系，故要用过去分词作宾补。

2.design

[语境感悟]

(1)(教材P13)That is why we are considering designing a new package for our chocolate bar as well.

那也是我们正在考虑为我们生产的巧克力棒设计新的包装盒的原因。

(2)A California builder designed the structure of its houses smartly.(2015·重庆)

一个加州的建筑工人巧妙地设计了房屋的构造。

(3)This building is designed for weddings and other celebrations.

这个建筑是专为婚礼和其他庆典设计的。

(4)I don't know whether they did it by accident or by design.

我不知道他们这样做是偶然地，还是故意地。

[归纳拓展]

design vt.设计；计划；构思；n.图案

be designed to do...目的是做......

be designed for专为......设计

be designed as被设计成

by design故意地