In what century were the fountain pen, shaving soap and street lamps invented? A.12th century AD B.14th century AD C.9th century AD D.16th century AD Answer and Feedback Answer:C do you want? view more test Xem thêm Share this post Some other questions you may be interested in. Which of these units for distance is the longest? Find the correct statement about cyclones. Which of the following terms describes a dark layer of clouds that bring rain or snow? This is a synonym for neutron star. Which type of mirror produces an image that is smaller than the original? Loudness is measured in decibels. A pneumatic drill at about 40 feet gives about 85 decibels. How many decibels result from an airplane taking off 200 feet (60 m) away? The poles of magnets are able to point the way because of ferromagnetic materials deep inside the Earth’s core. Scientists are using this animal to try and find a vaccine for leprosy. What is the lightest element that is a metal? The first fly by†for the planet Mars occurred in this year.
