1. Americans eat（
）vegetables per person today as they did in 1910.
A. more than twice B. as twice as many C. twice as many as D. more than twice as many
2. This information allows businessmen to keep （ ）of their list of goods by showing which items are being sold and how fast they are moving.
A. sight B. track C. touch D. sign
3.（
）his arrival at the airport, he was greeted by many teenagers holding flowers in their hands.
A. When B. While C. On D. For
请一一解释，再帮我第2句话翻译下！
请一一解释，再帮我第2句话翻译下！
请一一解释，再帮我第2句话翻译下！
请一一解释，再帮我第2句话翻译下！
请一一解释，再帮我第2句话翻译下！谢谢
17. There was a lot of fun at yesterday’s party. You (
), but why didn’t you?
A. should come B. ought to have come
答案是B，可是不是说should是主观的，ought to是客观的吗？
我觉得这道题中的“你”不是一定要来的啊，那不是主观的吗？为什么选B？
1楼的，还有问题补充的问题~谢谢~
1 C 这个是固定用法啊没什么可以解释的2 B 这个也是固定搭配keep track of 就是记录的意思意思是:这项信息让商人们能够记录商品的卖出和运输速度17 这是一个虚拟语气,你应该找本语法书上面都有介绍的这句话意思是你应该来参加昨晚的PARTY的,可是你为什么没有来?很明显是我问你为什么没有来在这里问问题的我主观上认为你应该来而你客观的被认为应该来所以you是处于客观的地位这题一个是主客观,再一个就是虚拟语气
1.C 2.B 3.C1.表示倍数的语法结构，twice (as many as) =twice the amount of 2.这个信息通过显示哪些项目正在被出售和销售的快来帮助生意人持续了解他们的商品（的情况）keep track of 就是持续了解某事，跟踪，（注：track就是轨迹的意思）3.on+名词/doing sth 就是 as
