高考英语一轮复习 外刊阅读 小猫钓鱼选词填空全 素材.docx

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1、高考英语外刊原创外刊阅读：小猫钓鱼1Elevated body temperature helps certain types of immune cells to work better, evidence suggestsA. devote B. mediate C. infected D. involved E. replicate F. mild G. dramatically H. conserved I. enhanced J. maintained K. temporarilyWith cold and flu season almost here, the next time

2、youre sick, you may want to thank your fever for helping fight off infection. Thats because scientists have found more evidence that elevated body temperature helps certain types of immune cells to work better.An increase in body temperature has been known since ancient times to be associated with i

3、nfection and inflammation, said Elizabeth A. Repasky, Ph.D., a researcher (31) _ in the work from the Department of Immunology at the Roswell Park Cancer Institute in Buffalo, New York. Since a febrile response is highly (32) _ in nature (even so-called cold blooded animals move to warmer places whe

4、n they become ill) it would seem important that we immunologists (33) _ more attention to this interesting response.Scientists found that the generation and differentiation of a particular kind of lymphocyte, known as a CD8+ cytotoxic T-cell (capable of destroying virus-infected cells and tumor cell

5、s) is (34) _ by mild fever-range hyperthermia. Specifically, their research suggests that elevated body temperature changes the T-cells membranes which may help (35) _ the effects of micro-environmental temperature on cell function. To test this, researchers injected two groups of mice with an antig

6、en, and examined the activation of T-cells following the interaction with antigen presenting cells. Body temperature in half of the mice was raised by 2 degrees centigrade, while the other half (36) _ a normal core body temperature. In the warmed mice, results showed a greater number of the type of

7、CD8 T-cells capable of destroying (37) _ cells.Having a fever might be uncomfortable, said John Wherry, Ph.D., Deputy Editor of theJournal of Leukocyte Biology, but this research report and several others are showing that having a fever is part of an effective immune response. We had previously thou

8、ght that the microbes that infect us simply cant (38) _ as well when we have fevers, but this new work also suggests that the immune system might be (39) _ enhanced functionally when our temperatures rise with fever. Although very high body temperatures are dangerous and should be controlled, this s

9、tudy shows that we may need to reconsider how and when we treat most (40) _ fevers.（355）（四、 核心词汇：involved conserved devote enhanced mediate maintained infected replicate temporarily mild dramatically elevated inflammation injected activation functionally外刊阅读：小猫钓鱼7The WHO just declared the coronaviru

10、s a pandemic. Heres what that means.A.concerned B.track C.assessment D.increasingly E.swept F.respond G.completely H.identified I.contributed J.substantial K.defining In a press conference Wednesday morning, WHO Director General Tedros Adhanom Ghebreyesus said what has been increasingly obvious for

11、weeks: The novel coronavirus that has (31) _ the world, infecting more than 120,000 people in more than 100 countries, is a pandemic. “WHO has been assessing this outbreak around the clock and were deeply (32) _ both by the alarming levels of spread and severity and the alarming levels of inaction.

12、We have therefore made the (33) _ that Covid-19 can be characterized by “pandemic,” Tedros said, going on to argue that the designation did not mean the situation was hopeless: “All countries can still change the course of this pandemic.”The news came after (34) _ cases doubled in the US in the spac

13、e of just two days, Chancellor Angela Merkel in Germany said that 60 to 70 percent of Germans could become infected, and Italy locked down its entire population and warned the world that they were running out of ICU capacity while experts warned many other countries were on (35) _ for large outbreak

14、s and health care capacity issues. The rapid spread of the virus in more countries likely (36) _ to the WHOs decision to declare the disease a pandemic.But in recent days, thats become (37) _ untrue. There are now more than 40,000 cases outside China, 33 percent of all cases. There is (38) _ communi

15、ty transmission in countries including Iran, Italy, and South Korean. The declaration that it is a pandemic doesnt change any facts on the ground, but it reflects the WHO pulling out all the stops in their effort to get the world to (39) _ to the situation with the seriousness it deserves.When it co

16、mes to (40) _ a pandemic, things get a little more complicated.A “pandemic” disease sounds much scarier than a mere “outbreak.” But its important to remember that “pandemic” refers to how many parts of the world are dealing with an elevated rate of the disease and, in theory, says nothing about how serious the disease is.核心词汇swept concerned assessment identified track contributed increasingly substantial respond defining completely elevated refers transmission declare severity3