题目内容
It’s easy to see how the sawfish got its name. These frightful creatures can grow to be more than 6 meters long. Their bodies are flat and winged, like underwater airplanes. And their noses are shaped like chainsaws.
Sawfish are food hunters of the sea. When a sawfish is hungry, it waves its sharp-toothed snout(口鼻部)through a group of fish. Then, it lifts its nose and uses its mouth to draw the injured victims.
Hardy(适应力强的)population of sawfish thrived in warm waters along coastlines around the world for thousands of years. Over the past 200 years, however, human actions have severely endangered sawfish. Threats include fishing nets that trap the huge animals, often by mistake.
Some people collect sawfish’s snouts as prizes: One snout recently sold for nearly $ 1,600 online. In some Asian cultures, the toothy snouts are used in ceremonies to drive evil and disease away. And sawfish are also delicious. A growing demand in Asia for the fish’s fins for a pricey soup has contributed to the fish’s loves. Compared with other fish, sawfish give birth late in life and at slow rates, which makes it hard for them to recover from overfishing.
New efforts now aim to restore sawfish population. Beginning next month, an international agreement will provide protection for all seven of the world’s sawfish species. Scientists are hoping that it’s not too late to save the sawfish.
Until 1998, “this fish had never been formally studied in the United States,” says Tonya Wiley of the Mote Marine Laboratory in Sarasota, Fla. “We didn’t know such basic things as where they live, what habitat they use, how often they breed, how many young they have — even what age sawfish are when they begin breeding.”
Through historical studies and field research, scientists have become aware of how much the fish’s numbers have decreased. Today, there may be 90 percent fewer sawfish than there used to be. Wiley estimates that only 3,000 to 6,000 sawfish remain in US waters.
Sawfish
Descriptions |
Size |
1.__________ |
||
2. __________ |
Body: Flat and winged |
Nose: Like a chainsaw |
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3. __________ of hunting for food |
Attacking fish with 4.__________ |
|||
Drawing the injured victims with its mouth |
||||
5. __________ Sawfish’s disappearance |
6. __________ |
|||
Sawfish’s snout relates business |
||||
Its 7. __________ and slowly which makes it hard to recover from overfishing |
||||
8.__________ |
Only 10 % sawfish left |
|||
3,000 to 6,000 remain in US waters |
||||
Efforts |
9.__________ |
Measure |
||
Restoring sawfish population |
10. __________ all seven of the world’s sawfish species |
|||
1.Shape / Appearance
2.Over 6-meter long
3. Steps
4. its sharp-toothed snout
5.Factors / Reasons for / Causes of
6.People’s fish-catching activities / Human actions
7. giving birth / breeding late
8. Present / Today’s situation
9.Aim / Goal / Purpose
10.Providing protection for
【解析】略
The Five Rules for Keeping Fit
Hi, there! I'm Grystal Collins, and I'm very happy to share some time with you. So, you want to keep fit, huh? Well, you surely came to the right place. Together we can keep fit and healthy, and succeed in doing that. It's easy. Everybody can do it, you hear? Just remember the five golden rules.
Number one: Always wear comfortable clothes when you are exercising. You need to feel comfortable and relaxed(放松).
Number two: You should always do some warming-up exercise first to get your body ready for the real thing.
Number three: Never try to do too much exercise too soon. Take it nice and easy now, you hear? There's no rush about this.
Number four: Don't forget to relax for about five minutes when you've finished your exercise. You need to rest a little bit after you've been exercising.
And here is the golden rule Number five. Stop at once if you feel any pain in your neck, head or any part of your body.
1.The students may most probably be the people ___________.
A.who are ill |
B.who want to be healthier |
C.who are Crystal Collins' good friends |
D.who are not interested in taking exercise |
2.Crystal Collins may most probably say this .
A.before the exercise starts |
B.when the exercise is over |
C.during the exercise |
D.as soon as the exercise has started |
3.Which of the following is NOT true?
A.You should do some warming-up exercise before the real thing. |
B.You should wear comfortable clothes. |
C.You should rest for a while when you are doing warming-up exercise. |
D.You should stop if you feel any pain in your body. |