网址：http://m.1010jiajiao.com/timu3_id_2462592[举报]
Lying in the sun on a rock, the cougar（美洲豹）saw Jeb and his son, Tom, before they saw it. Jeb put his bag down quickly and pulled his jacket open with both hands, making himself look big to the cougar. It worked. The cougar hesitated, ready to attack Jeb, but ready to forget the whole thing, too.
Jeb let go of his jacket, grasped Tom and held him across his body, making a cross. Now the cougar’s enemy looked even bigger, and it rose up, ready to move away, but unfortunately Tom got scared and struggled free of Jeb.
“Tom, no!” shouted his father.
But Tom broke and ran and that’s the last thing you do with a cougar. The second Tom broke free, Jeb threw himself on the cougar, just as it jumped from the rock. They hit each other in mid-air and both fell. The cougar was on Jeb in a flash, forgetting about Tom, which was what Jeb wanted.
Cougars are not as big as most people think and a determined man stands a chance, even with just his fists. As the cougar’s claws（爪子）got into his left shoulder, Jeb swung his fist at its eyes and hit hard. The animal howled and put its head back. Jeb followed up with his other fist. Then out of the corner of his eye, Jeb saw Tom. The boy was running back to help his father.
“Knife, Tom,” shouted Jeb.
The boy ran to his father’s bag, while Jeb started shouting as well as hitting, to keep the cougar’s attention away from Tom. Tom got the knife and ran over to Jeb. The cougar was moving its head in and out, trying to find a way through the wall Jeb was making out of his arms. Tom swung with the knife, into the cougar’s back. It howled horribly and ran off into the mountains.
The whole fight had taken about thirty seconds.
1.Why did Jeb pull his jacket open when he saw the cougar?
A. To get ready to fight. B. To frighten it away.
C. To protect the boy. D. To cool down.
2.What do we know about cougars?
A. They are afraid of noises.
B. They hesitate before they hit.
C. They are bigger than we think.
D. They like to attack running people.
3.Which of the following happened first?
A. The cougar jumped from the rock.
B. Tom struggled free of his father.
C. Jeb asked Tom to get the knife.
D. Jeb held Tom across his body.
查看习题详情和答案>>
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
请将标有A～G的段落插入文章中标号1～5的合适位置，使这篇文章意义完整，结构连贯；其中有的段落是多余的。
Explosive sound and energy
ROCK music didn’t exist 60 years ago． 1 Someone didn’t just wake up and invent rock．So, how did it happen? What is rock?Although impossible to strictly define, it’s generally recognized that rock music was born in 1950s America． 2 At this time, early “rockers”were mixing the country music of white America with the rhythm and blues sound loved by the black US citizens．The result was rock‘n’ roll．The record most commonly considered as the beginning of the rock ‘n’ roll period is Bill Haley & The Comets’1954 recording of “Rock Around the Clock”． 3 Elvis’s 1950s recordings established the basic language of rock ‘n’ roll; his explosive stage presence set standards for the music’s visual image, while his voice was powerful and interesting．
4 Despite the different directions and sound of rock bands over the last 50 years, there is something common to all the greats：a charming lead vocalist, a talented guitarist full of energy and creativity, a bassist with cool indifference and a drummer．
For most of its life, rock has been split into different parts, creating new styles every few years－giving birth to a never-ending number of sub-genres． 5 Rock is a generic term, but it’s exciting that it can now mean so many different things．
A．Rock is my favorite and I’ll be a popular singer．
B．Now, it’s one of the world’s most popular genres．But musical styles don’t spring up overnight．
C．Rock had a specific sound and image for only a few of its early years．As time went by, the genre began to place equal emphasis on skills and pushing the boundaries of the music．
D．In fact, in the West, musically speaking, the years 1953～1955 are known as the rock ‘n’ roll years．
E．As a result, “rock”has been used to describe everything from bands playing catchy rhythms to groups based on tuneless, noisy guitars．
F．Rock music will be held in our school if we send an invitation to the band．
G．But it was Elvis Presley, known as “The King of Rock and Roll”, who really popularized the new sound throughout America and the Western world．
Annealing
Annealing is a way of making metal softer by heating it and then letting it cool very slowly, if metal is heated and then cooled very quickly, for example by dipping(浸) it in water, it will be very hard but also very brittle(脆)—that is, it will break easily. Metal that has been annealed is soft but does not breaks as easily. It is possible to make metal as hard or as soft as is wished, by annealing it. The metal is heated, and allowed to cool slowly for a certain length of time. The longer the heated metal takes to cool slowly, the softer it becomes. Annealing can also be used on other material, such as glass.
1. Annealing can make metal ____
A. hard and tough(韧) B. hard but brittle C. soft but tough D. soft and brittle
2. Why do people put hot metal in water?
A. To make it hard. B. To make it soft. C. To make it cool. D. To make it brittle
3. In annealing, the required hardness of a metal depends on ______
A. the quantity of water used B. the temperature of the metal
C. the softness of the metal D. the timing of the operation
4. As suggested by the text, how can glass be made less brittle?
A. It can be heated and then cooled quickly.
B. It can be cooled and then heated slowly.
C. It can be heated and then cooled slowly.
D. It can be cooled and then heated quickly.
查看习题详情和答案>>
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||