问题
完形填空
完形填空。 | ||||
The world 1 many interesting sounds. Some are unpleasant to our ears while 2 are very pleasant to hear. In a single day you probably hear 3 sounds. All sounds are different. Some 4 loud, some sounds are high, others are low, some sounds are useful. 5 sound we can not talk or listen to each other. The ringing of the alarm clock wakes people up; the hooting of a car warns people of danger. Some sounds are harmful. When planes fly low 6 the land. The very loud sounds can damage the house. Very loud sound can even make people deaf. We know sound travels about one kilometer in three 7 . In a thunder storm you see the lighting first and then hear the thunder. This is because light travels_8_ than sound. Next time you see lightning, count the number of seconds before you hear the thunder. Divide this number 9 3. This will tell you 10 kilometers away the thunder storm is.
|
答案
1-5: D A A C C 6-10: D D B C B |