听写题

Extinction is a difficult concept to grasp. It is an eternal concept. It is not at all like the killing of individual life forms that can be renewed through normal processes of reproduction. Nor is simply diminishing numbers. Nor is it damage that can somehow be remedied or for which some substitute can be found. Nor is it something that only affects our own generation. Nor is it something that could be remedied by some supernatural power. It is, rather, an absolute and final act which there is no remedy on earth or in heaven. A species once extinct, it’s gone forever. However many generations succeed us in coming centuries, none of them will ever see this species that we extinguish. Not only us we bring about extinction of life on a vast scale. We are also making the land and the air and sea so toxic that the very conditions of life are being destroyed. As regard natural resources ,not only are the none renewable resources being used up in a of frenzy of processing, consuming and disposing but we are also ruining much of our renewable resources. Such as the very solid self on which terrestrial life depends. The change that is taking place on the earth and in our minds is one of the greatest changes ever to take place in human affairs. Perhaps the greatest, since we are talking about is not simply another historical change or cultural modification. But it change the geological and biological as well as psychological order of magnitude.

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As it is,sleep is so undervalued that getting by on fewer hours has become a badge on Plus, we live in a culture that(36)to the late neighter, from 24 hour grocery store to ? shopping site that never close. It’s no surprise, then, that more than half of American adults get the 7 to 9 hours of shut-eye every night as (37)by sleep experts.

Whether or not we can catch up on sleep on the weekend, say- is a hotly (38)among sleep researchers. The latest evidence suggests that while it isn’t (39), it might ? when Liu, the UCLA sleep researcher and professor of medicine, brought (40)sleep-rest people into the lab for a weekend of sleep during which they lagged about 10 hours per night.showed (41)in the ability of insulin(胰岛素)to process blood sugar. That suggests up sleep may undo some but not all of the damage that sleep (42)causes, which is encouraging ? given how many adults don’t get the hours they need each night. Still, Liu isn’t (43)to end the habit of sleeping less and making up for it later.

Sleeping pills,while helpful for some, are not(44)an effective remedy either. "A sleeping pill will (45)one area of the brain, but there’s never going to be a perfect sleeping pill, because you couldn’t really replicate (复制)the different chemicals moving in and out of different parts ? the brain to go through the different stages of sleep," says Dr. Nancy Collop, director of the Em? University Sleep Center.

A)alternatively

I)negotiated

B)caters

J)pierce

C)chronically

K)presumption

D)debated

L)ready

E)deprivation

M)recommended

F)ideal

N)surpasses

G)improvements

O)target

H)necessarily