单选题Since Jonas Salk came up with his polio vaccine, infantile paralysis has virtually disappeared from the United States. A. surfaced with B. raised the price of C. discovered D. elevated
单选题I caught the last bus from town, but Tom came home______than I.
单选题It has been estimated that only 21 percent of______world's land surface can be cultivated and that only 7.6 percent is actually under______cultivation.
单选题"Do you regret paying five hundred dollars for the painting?" "No, I would gladly have paid______for it. "
单选题I had my hair cut at the______around the corner. A．barber B．barbers C．barber's D．barbers'
单选题If one______by vanity, he will be very particular about others'clothing and appearance.
单选题Influenza travels exactly as fastly as man.
单选题Without the music, the children would have not had so much fun. A. wouldn't be having B. wouldn't have been C. wouldn't be D. wouldn't have had
单选题You may be able to cheat some people for a time, but you won't succeed on fooling them forever.
单选题Which of the following statements can best describe Texans?
单选题Dr White checked the patient's signs carefully before making his statement. A. synonyms B. symptoms C. symbols D. suspensions
单选题He could produce no evidence ______ his argument.
单选题All of the international delegates attending the conference ______ to bring a souvenir from their own countries.
单选题He painted his bedroom black. It looks dark and dreary. He {{U}}should choose{{/U}} a different color.
单选题What do you think of his proposal that some measures______to improve the working conditions?
单选题I can't tell the time because the ______ of the clock have been removed. A. hands B. pointers C. arms D. fingers
单选题Most psychologists deeply believe that it is just______difficult to change a person's way of thinking as it does to rectify his deep-rooted habits.
单选题Many students agreed to come, but some students against because they said they don't have time.
单选题"Do you regret paying five hundred dollars for the painting?" "No, I would gladly have paid______for it. " A．twice so much B．twice as much C．as much twice D．so much twice
单选题The sun rises in the east and sets in the west, so it seems as if the sun______round the earth. A．were circling B．circles C．is circling D．be circling