题型:阅读理解 题类:常考题 难易度:困难
2016届河北正定中学高三上期中考试英语试卷
Can eating a chocolate bar every day really prevent age-related memory loss? No. But a new research shows that large amounts of flavones, substances found in cocoa, tea and some kinds of vegetables, may improve age-related memory failure.
Dr. Scott Small is a professor of neurology (神经病学) at Columbia University in new York City. He is the lead writer of a research paper describing the effects of cocoa flavones on brain activity. His study involved 37 volunteers aged between 50 and 69. Researchers gave them a high-level flavones drink made from cocoa beans or a low-level flavones drink. For a period of three months, some subjects got 900 milligrams of flavones a day. The others got 10 milligrams of flavones each day. Brain imaging and memory tests were given to each study subject before and after the study. Dr. Small says that the subjects who had the high-level flavones drink showed much improvement on memory tests.
The researchers warn that more work is needed to be done because this study was performed only on a small group. Dr. Joann Manson is the lead researcher of a four-year study involving 18,000 adults. This study will use flavones capsules(胶囊). The study subjects will be divided into two groups and will take two pills per day. The capsules used will all look the same. But one group's capsules will contain flavones, while the other group will take capsules made of an inactive substance, or placebo
Dr. Manson says it's not necessary for people to start eating more chocolate, because a person would have to eat a huge amount of chocolate to get the same level of flavones given to the rest subjects. He adds many manufacturers have planned to remove the flavones from their chocolate products. Similarly, Dr. Manson says a cocoa-based flavones extract(提取)may be developed in the future But he says that more studies are needed to see how much flavones is good for our health.
USING YOUR GOLDEN ARROW MULTIPURPOSE CALCULATOR TO DETERMINE THE DATE AND TIME AT YOUR LOCATION AS WELL AS LOCATIONS AROUND THE GLOBE SEETING THE DATE AND TIME FOR YOUR LOCATION
Use the TIME ZONE chart below to locate code that corresponds with the time zone in which you live. Select the major city that shares your time zone. Press the code that corresponds to that city (e.g. ,if you live in Washington ,Oregon California, or Nevada, all of which are located in the Pacific time zone, you would choose Los Angeles and press the corresponding code which is the 1 key).
⒈Press TIME twice. The two digits representing hours will begin to flash.
⒉Depress and hold the ▲or▼ key until the desired hour flashes. Then release.
⒊Press SET. The two digits representing minutes will begin to flash.
⒋Depress and hold the ▲or▼ key until the desired minute fleshes. Then release.
⒌Press SET. The two digits representing seconds will begin to flash.
⒍Depress and hold the ▲or▼ key until 00 flashes. The release.
⒎Press SET. To set the year, month, and day press DATE three times. Then repeat steps 2 through 7.
NOTE: At this point, hour, minutes and seconds will change to year, month, and day.
DETERMINAING DATE AND TIME FOR THE WORLD'S16 TIME ZONES
⒈PRESS ZONE TWICE.
⒉Use the TIME ZONE chart below to locate the code that corresponds to the time zone for which you desire the date and time. Press that code (e.g., press = to determine the date and time in Hong Kong). The selected date and time will alternately display for 10 seconds and then return automatically to your home date and time.
CODE |
CITY |
TIME |
0 |
Honolulu |
-10 |
1 |
Los Angeles |
-8 |
2 |
Denver |
-7 |
3 |
Chicago |
-6 |
4 |
New York |
-5 |
5 |
Rio de Janeiro |
-3 |
6 |
London |
0 |
7 |
Paris |
+1 |
CODE |
CITY |
TIME |
8 |
Cairo |
+2 |
9 |
Moscow |
+3 |
+ |
Karachi |
+5 |
- |
Bangkok |
+7 |
= |
Hong Kong |
+8 |
* |
Tokyo |
+9 |
/ |
Sydney |
+10 |
# |
Wellington |
+12 |
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