精选优质文档-倾情为你奉上1. Vocabulary：Multiple Choices unit 1Directions: There are 10 incomplete statements here. You are required to complete each statement by choosing the appropriate answer from the 4 choices marked A), B), C) and D).1. The engineers ears are highly sensitive _ any unusual sound in the machine. A) of B) on C) to D) by 2. Every new staff is required to take the training course, _ will help them know more about the company. A) which B) that C) i
