单选题In order to stay warm during an extended period of time exposed to frigid weather a big heavy coat worn over normal clothing is not always the best method. If you are going to be spending a ______ period in the cold it is much better to dress in several lighter layers rather than in one heavy layer. By wearing layers the clothing acts ______ containment system for warmth. It takes body heat longer to escape layers than it does to escape one heavy layer. In addition, wearing a hat is recommended because most body heat is lost through the head and mittens are ______ to gloves.
单选题The assembly line worker"s illness has been ______ due to the hazardous conditions of his work environment and his lack of sleep.
单选题
单选题______to providing reliable electrical services to households and commercial establishments in Denver, Voltworks hires only highly skilled electricians.
单选题The______for new trainees for each of the main offices will begin next
week.
A. position
B. occupations
C. orientations
D. assertion
单选题
单选题What is the message mainly about?
单选题This is definitely the city ______ I'd like to live for the rest of my life. A. that B. which C. in which D. in where
单选题Urban Textiles will not refund down payments to Ms. Smith______she cancel her order after the products have been shipped.
单选题The Human Resources department is considering ______ a new benefits package for the benefit of the employees. A. introduced B. to introduce C. being introduced D. introducing
单选题Professor Barkley is not ______ an expert in classical economics but also a world-renowned specialist in international banking laws.
单选题The water ______ is getting more serious as there has been no rainfall for two months.
单选题
单选题Corporations should submit quarterly earning predictions and profit statements to news services because ______ should be easy for ordinary investors to track their activities.(A) who(B) it(C) that(D) they
单选题
单选题Attendants on the train treated all the passengers______and made sure they were comfortable during the trip.
单选题In case of the ______ of the contract that would cut the firm' s revenues half, we need an alternative.(A) cancel(B) cancels(C) canceled(D) cancellation
单选题According to the speaker, what did the mayor recently do?
单选题
单选题A representative called to notify the manager that the office's fire insurance policy______on May 30.