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Listening for details
— Well, now, why dont you all sit down? Uh, Donald, sit down, sit down. Ah, here. Here he ______. Well, here I come.
— Hello, hello.
— Say hello. Say hello.
— Hello.
— H- Hello.
— Hello, John.
— Oh, yes, Ive got lines here.
— Well, fine, fine, I guess. But ____ d
2、id I get here?
— Uh, uh, well, let me _____ you. First Ill need a _____________, your blood.
— Right.
— Ooh! John, that ____.
— Relax, John, its all part of the _______ of _______.
— Hello, John.
— Hello, John.
— Hello.
— Cloned from what?
— Loy extraction has ______ recreated an intact D
3、.N.A. strand.
— Not without massive sequence gaps.
— Paleo-D.N.A. from what source? Where do you get a 100-million-year-old ________ blood?
— Shhh!
— What? What? Oh, well, Mr. D.N.A.! Where did you come from?
— From your blood. Just one drop of your blood ________ billions of strands of D.N.A.
4、, the building blocks of ____. A D.N.A. strand ____ me is a blueprint for building a living thing. And sometimes, animals that went ______ millions of years ago, like dinosaurs, left their blueprints behind for us to ____. We just had to know where to look. ____ million years ago, there were mosquit
5、oes, just like today. And just like today, they ______ the blood of animals, even dinosaurs. Sometimes, after ______ a dinosaur, the mosquito would _____ on the branch of a tree and get stuck in the sap (樹液). After a long time, the tree sap would get hard and _______ fossilized, just like a dinosaur
6、 bone, __________ the mosquito ______. This fossilized tree sap, which we call ______, _________ millions of years with the mosquito inside. Until Jurassic Park scientists came along. _____ sophisticated techniques, they extract the preserved blood from the mosquito, and bingo.: dino D.N.A. A full D
7、.N.A. strand contains three ______ genetic codes. If we looked at screens like these once a second for _____ hours a day, itd take two years to look at the ______ D.N.A. strand. Its that ____. Since its so old, its full of _____. Now thats where our geneticists take over. Thinking machine super-comp
8、uters and gene sequencers ___________ the strand in minutes. And virtual-reality displays show our geneticists the _____ in the D.N.A. sequence. We use the ________ D.N.A. of a frog to _____ the holes ... and complete the code. Phew! And now, we can make a _____ dinosaur.
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— This score is only temporary. It all has very dramatic ______, of course. Rum-pum-pum! A march or something. It hasnt been written yet. And then, of course, the tour ______ on.
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