Bats use echoes of their own high – frequency sounds to detect food and avoiding obsta.

Câu hỏi liên quan

• Choose the letter A, B, C or D to complete the sentences. "The electrical appliances you buy should ____   eco-friendly."

• A thunder usually follows lightningfive seconds for every mile between flash and the observer.

• Since it was so difficult for American Indians to negotiatea peace treaty or declare war in their native language, they used a universal understood form of sign language

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• If you didn't wear shabby clothes, you _______ more good-looking. 

• Petrography concerns primarily with the detailed description and classification of rocks, whereas petrology deals prima with rock formation

• When we went for a picnic last Sunday,...........  weather turned out to be very good.

• A telephone, a satellite TV , a fridge and the (other facilities are availa in our hotel rooms

• It’s been brought to my attention that there has been a number of thefts from office

• It is a common knowledge that Dolas intend to retire at the end of the season

• Choose the letter A, B, C or D to complete the sentences. "Hoa_____ herself ill if she doesn't eat properly."

• If I didn’t have exams next week, I ............ camping with you this weekend.

• I advised him about low ceilings in the house but he took no notice and hit head three times

• As pure white sugar, Dextrose used mainly in candy, baked goods, and canned goods

• In safari parks, which wild animals roam freely, visitors are forbidden to get out of their cars

• Choose the word(s) OPPOSITE in meaning to the following word(s). "Abundant"

• In 1984, the world popula rose to over 4.7 billion, up almost 85 million from an estimate made the year ago.

• She is doing extremely well in her  ......   graduate course.

• To be good  agricultural purposes, soil must have in it minerals plants required.

• Vitamin E, which is found in nutritious foods such as green veget and whole grains, action as an antioxidant in cell membranes.

• Though he did not develop sign language, Laurent brought it on America from France