阅读下面的短文。每篇短文的后面有五个问题,每个问题有四个备选答案。请根据短文的内容选择最佳答案。每个试题计3分,共计15分。
Scientists who study insects have a real mystery on theirhands.All across the country,honeybees are leaving their hives and neverreturning. Researchers call this phenomenon colony-collapse1 disorder.Accordingto surveys of beekeepers across the country,25 to 40 percent of the honeybeesin the United States have vanished from their hives since last fall.So far,noone can explain why.
Now,a group of scientists andbeekeepers have teamed up to try to figure out whats causing the alarmingcollapse of so many colonies. By sharing their expertise in honeybee behavior,health,and nutrition,team members hope to find out whats contributingto thedecline and to prevent bee disappearance in the future.
Another cause of colony-collapse disorder may be certain chemicalsthat farmers apply to kill unwanted insects on crops,says Jerry Hayes,chief beeinspector for the Florida Department of Agriculture3.Some studies,hesays,suggest that a certain type of insecticide affects the honeybees nervoussystem and memory.It seems tike honeybees are goingout and getting confused about where to go and what to do, he says.
词汇:5hQnIbi:5pArEsaitp
hiven.蜂巢;蜂箱 digestiveadj.消化的5pClEni5mju:np
beekeepern.养蜂人 insecticiden.杀虫剂7ekspE5ti:zdai5vE:sitip
专门知识,专长注释:
2. the United States Department ofAgriculture Bee Research Laboratory:美国农业部蜜蜂研究实验室。
练习:
A Honeybeesare flying all across the country.
C Honeybees are leaving their hives and do not return.
2. Why are researchersseriously concerned with the phenomenon of colony-collapsedisorder?
B Becausehoneybees feed on flowers.
D Both B and C.
A Worsening environment.
C Dwindlingnumber of flowers around.
4. According to the fifth paragraph,which of thefollowing about bees genes istrue?
B Beesgenes help keep them in their hives.
D Beesgenes couldexplain the collapse of some colonies.
A Farmers apply certain chemicals to killunwanted bees.
C The insecticide affects the honeybees memory.
答案与题解:
2. A 短文第二段的第一句提供了答案。蜜蜂传播花粉能使植物结果,因此为人类提供食物。
4. D 第六段的句子:beesgenes could explain why some colonies have coilapsed andothcrs have not。这是选择D的依据。选项A、B、C的内容文章中都没有出现,所以不是答案。
每天1万步就叫健康吗?这原来是日本人的营销
国内英语资讯:China Focus: China issues plans to modernize education
养生诀窍:每天3颗椰枣你的身体会变成这样
体坛英语资讯:40,000 runners race at the annual Tel Aviv Marathon
周末晚睡真的很糟糕吗?
国际英语资讯:Pakistan does not want war with India, says military spokesman
心理学如何解读人的吸引力?
国内英语资讯:DPPs pressure on reunification supporters against historical trend: spokesperson
国际英语资讯:Venezuelans march in Caracas in defense of peace
国际英语资讯:German Bundestag passes emergency laws in case of hard Brexit
My Dream 我的梦想
Gucci又惹出大麻烦了,新毛衣涉嫌种族歧视
体坛英语资讯:Craven-led Namibian team NCCS to compete in South African cycling tours
国内英语资讯:China to further enhance physical education in primary, secondary schools
国际英语资讯:Venezuela wants peace with U.S., talks with opposition: FM
国际英语资讯:Feature: Crisis-hit Greek antique artworks dealers welcome recovery, hope for better days
国际英语资讯:Trump to depart on Feb. 25 for Hanoi summit with Kim
国际英语资讯:Belt and Road Initiative brings new opportunities for Nepal: former Nepali PM
体坛英语资讯:Three-pointers gift Jordan 86-62 win over China in FIBA World Cup qualifier
沙特开卖永久居住权 每人147万元人民币
国际英语资讯:U.S. national zoo holds housewarming event inside giant panda house
国内英语资讯:China, Canada to launch television festival in Toronto
Adobe研发网红照妖镜,能自动识别PS过的脸
体坛英语资讯:Barca looking to end away day problems as Real Madrid visit Levante in Matchday 25
国际英语资讯:Trump arrives in Hanoi for 2nd DPRK-U.S. summit
体坛英语资讯:Thailand wins both singles titles at Asian Sepak Takraw Championship
国际英语资讯:UN food agency revisits Yemen wheat silos after months of suspension
体坛英语资讯:Pizjuan Stadium first destination in the long week for Barca
想不到!贫民窟成印度最热门旅游景点
国内英语资讯:China Focus: Economic Corridor to benefit people of China, Myanmar
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |