重点单词短语：
1. sample n.样品，试用品&vt.品尝
例:Could you send us some samples of your products?
(可以寄给我们一些贵公司产品的样品吗?)
Would you like to sample our new flavor of ice cream?
(你想要尝尝我们新口味的冰淇淋吗?)
2. pack vt.包装
例:The eggs were all packed in the cartons for sale.
(鸡蛋全都装在纸盒里待售。)
3. a sales demonstration 销售商品展示会
demonstration 展示
4. headquarters 总公司，总部(恒为复数)
5. take it easy放轻松，慢慢来
例:There's no need to be worried. Just take it easy.
(不需要担心。放轻松。)
6. GPS全球定位系统(=Global Positioning System)
例:Sally wants to install GPS in her car.
(莎莉想在车里安装全球定位系统。)
7. mean to V. 有意要……(以人作主语)
= plan to V.
= intend to V.
means + N/V-ing / that从句意味……(以事物作主语)
例:I didn't mean to be rude to you. Please forgive me.
(我无意冒犯你。请见谅。)
Dozing off in class most likely means you didn't sleep well.
(上课打磕睡很可能是因为你没睡好。)
8. confident['kanfadant]。.有信心的
confidence['kanfadans]。.信心
be confident that+从句有信心……
= be confident of+N/V ing
例have confidence in+N/V-ing
例:Brian is co丝喳剑卫丝he will win the singing contest.
=Brian is confident ofwinning the singing contest.
=Brian has confidence in winning the singing contest.
(布莱恩有信心赢得这次的歌唱比赛。)
9. go according to plan照着计划进行
例:If everything goes according to plan, we can meet the deadline.
(如果事情都照计划进行，我们就能如期完成。)
* meet the deadline如期完成.在截止日期前完成

答案：
10.(B) 11.(A) 12.(D)