题目内容
— _______ does Earth Day come every year?
— It comes on April 22.
- A.What
- B.Why
- C.When
- D.Where
C 根据答语“地球日是4月22日”知,问的是“地球日”是每年的哪一天。故选C。
Have you ever heard an echo of your voice?
An echo is a reflected(反射)sound. Stand in a very large, empty hall with nothing on the walls. Then shout. The sounds you make will hit the walls and come back to you. The walls reflect the sounds. These reflected sounds are called “echoes”.
We can use reflected sound to make sound travel farther. Hold a watch about fifty centimeters from your ear. You cannot hear it. The sound of the watch travels a short way in all directions. It does not travel as far as your ear. You can make it travel to your ear by using a roll of cardboard(纸板筒).
Make the roll of cardboard about fifty centimeters long. Put one end over your ear and hold the watch at the other. Now you can hear the watch because the sound has not gone in all directions. It is reflected down the roll to your ear.
A megaphone(喇叭筒)works in the same way. It makes sound travel farther. It reflects the sound into a beam which can travel a long way. In the ship, the sailor uses the megaphone to make his voice travel. Without the megaphone, his voice cannot travel far.
We use reflected sound in many ways. We use it to measure the depth of the sea, for example. Among the animals, bats and whales use reflected sound to tell them where they are and what things are near them.
【小题1】 Which is the right order of hearing our echo in a very large, empty hall?
a. We hear the reflected sound b. The sound returns to us
c. The sound hits the walls d. We make a sound
A.c, b, a, d | B.c, a, b, d | C.d, c, b, a | D.d, b, c, a |
A.reflected sound is useful only to blind people |
B.people haven’t made use of reflected sound yet |
C.bats use reflected sound to fly and get food |
D.whales don’t use reflected sound as they live in the sea |
A.a long piece of wood | B.a roll of cardboard |
C.a thin thread | D.a long piece of silk |
My English teacher is very funny . He has really long hair and wears earring in one ear . He likes to wear purple shirts and orange pants . He also uses all kinds of slang(俚语) words from 1970s. When he likes something , he’ll say it’s really “ groovy(酷的)”. I think he played the guitar in a rock band when he was young .
The other day , he walked into class and noticed (注意) that there was a new student . He asked him , “Hey ,man ,what’s happening ?” The student was very confused(困惑的) ,but we all laughed because we knew that the teacher was just saying hello . “You’re new ,aren’t you ?” The teacher asked . The student was surprised , and said to himself , “Is this the teacher ? He looks strange(奇怪 ).” Then he explained(解释) to all us , “Sorry .Maybe I’m in the wrong classroom .”
1.Why is the English teacher strange ?
A.He wears pretty clothes |
B.He uses slang words and has a strange appearance |
C.He speaks strange English . |
D.He played the guitar in a rock band . |
2.What does the teacher like to wear ?
A.A ring and purple shirts . |
B.Orange pants and a scarf |
C.An earring and orange pants . |
D.Purple shirt and red pants . |
3.What did he do in the past according to the writer ?
A.He was a fomous singer |
B.He was a guitar player in the rock band . |
C.He sold records . |
D.He was an English teacher . |
4.How did the teacher treat (对待) the new student ?
A.He was easygoing as a friend . |
B.He was very strict . |
C.He was surprised to see him |
D.He was very confused. |
5.Why was the new student confused ?
A . He never saw such a strange teacher .
B . He was afraid of the teacher .
C. He didn’t like the classroom .
D. B and C.