持久性杀虫剂;残留性杀虫剂

Lesson 68 Persistent 纠缠不休 First listen and then answer the question. 听录音,然后回答以下问题。 Why did Elizabeth tell Nigel that she was going to the dentist? I crossed the stree

发表于:2018-11-28 / 阅读(521) / 评论(0) 分类 新概念英语第二册

Plans for Haiti's recovery from the devastating earthquake are on the agenda at the United Nations donors' conference, March 31 in New York. Among the country's top priorities are the estimated 600,000 people who fled the capital, Port-au-Prince, for

发表于:2018-12-08 / 阅读(239) / 评论(0) 分类 VOA标准英语2010年(三月)

Malaria Programs at Risk From Funding Cuts Ami Diabate, has brought her three children to a rural clinic to get the latest anti-malarial drugs. The aid agency Mdecins Sans Frontires - or Doctors Without Borders - is rolling out the pilot program acro

发表于:2018-12-08 / 阅读(225) / 评论(0) 分类 VOA标准英语2012年(十二月)

This is the VOA Special English Agriculture Report. In two thousand eight, scientists reported on a study of cotton grown in six provinces in northern China. The study involved bollworms, a major threat to cotton farmers. It also involved Bt cotton,

发表于:2018-12-16 / 阅读(221) / 评论(0) 分类 2010年VOA慢速英语(五)月

Helping Children Too Much Is Hurting Them From VOA Learning English, this is the Health Lifestyle report. Helicopter parenting describes a style of raising children where parents are over-protective and do too much. The term was used for the first ti

发表于:2018-12-16 / 阅读(259) / 评论(0) 分类 2016年VOA慢速英语(三)月

Studies Link Bee Decline to Insecticide Billion-dollar bees Bees pollinate the flowers that become fruits, nuts and vegetables. The work these insects do is worth about $18 billion a year to U.S. farmers. But honeybee colonies in the United States ha

发表于:2018-12-16 / 阅读(234) / 评论(0) 分类 VOA标准英语2012年(三月)

It's bad enough that mosquitoes suck our blood, and sometimes pass on disease. But there's more. They can actually give you a disease and pee on you at the same time. Adding insult to injury if you will. Jerod Denton, a pharmacologist at Vanderbilt U

发表于:2018-12-24 / 阅读(252) / 评论(0) 分类 2016年Scientific American(十二)月

A persistent saleswoman A: I dont have any time to spare, Jenny. B: I understand youre a busy man, Mr. Black. I just wanted to show you these samples. A: No, Im sorry. Ive told you I dont have any more time and I mean it. Im afraid youre going to hav

发表于:2018-12-25 / 阅读(281) / 评论(0) 分类 办公室英语口语

According to the Newscientist of September 7, weight loss has a serious downside: it leads to the release of persistent organic pollutants (POPs), which may have a significant impact on health. POPs are man-made chemicals which enter the food chain f

发表于:2019-01-07 / 阅读(291) / 评论(0) 分类 实用英语

By Zulima Palacio Washington, D.C. 15 December 2006 watch Malaria Summit report President Bush and his wife Laura hosted a White House summit on Malaria Thursday. The conference brought together health ministers from countries affected by malaria, h

发表于:2019-01-10 / 阅读(309) / 评论(0) 分类 2006年VOA标准英语(十二月)

To Fight Malaria, Bed Nets Are the Most Important Weapon 蚊帐成为抗疟疾最重要的武器 From VOA Learning English, this is the Health Lifestyle report. United Nations researchers are reporting progress in the fight against the disease malari

发表于:2019-01-12 / 阅读(238) / 评论(0) 分类 2016年VOA慢速英语(十二)月

New studies confirm that giving anti-malaria drugs to children who are already sleeping under insecticide-treated bed nets provides additional protection in helping control the disease. Smallpox was conquered with a single vaccine. The fight against

发表于:2019-01-14 / 阅读(289) / 评论(0) 分类 VOA标准英语2011年(二月)

Chinese President Xi Jinping told his U.S. counterpart, Donald Trump, in a telephone conversation late Wednesday that Beijing remains persistent on the denuclearization of the Korean Peninsula. CRI's Yu Yang has more. During the phone conversation, X

发表于:2019-01-19 / 阅读(295) / 评论(0) 分类 2017CRI中国国际广播电台

By Mike O'Sullivan Los Angeles 08 March 2007 Los Angeles has hundreds of street gangs that lure inner-city youngsters into lives of crime. VOA's Mike O'Sullivan reports, the problem goes back many decades, but local officials say they are finally ma

发表于:2019-01-31 / 阅读(297) / 评论(0) 分类 2007年VOA标准英语(三月)

By Lisa Schlein Geneva 27 November 2007 The Global Fund to Fight AIDS, Tuberculosis, and Malaria reports nearly every family with children in Africa soon could have a bed net to protect against malaria. The Geneva-based Global Fund says it has delive

发表于:2019-01-31 / 阅读(290) / 评论(0) 分类 VOA常速英语2007年(十一月)

Nigeria's Boko Haram Remains Persistent, Mysterious Threat DAKAR The United States has formally designated the Nigerian militant sect, Boko Haram, and a splinter group, Ansaru, as foreign terrorist organizations. Boko Haram's propaganda videos have b

发表于:2019-01-31 / 阅读(247) / 评论(0) 分类 VOA常速英语2013年(十一月)

Spraying Insecticide Indoors Reduces Spread of Malaria Researchers in West Africa have shown that spraying insecticide indoors can dramatically reduce malaria transmission. Efforts to develop a malaria vaccine have so far been disappointing, so progr

发表于:2019-02-12 / 阅读(333) / 评论(0) 分类 VOA标准英语2011年(十月)

HOUSTON, Dec. 18 (Xinhua) -- The U.S. Coast Guard said on Tuesday that underwater inspections at the site of BP's 2010 rig explosion have failed to identify the sources of a persistent sheen on the surface of the Gulf of Mexico. Meanwhile, it said th

发表于:2019-02-18 / 阅读(276) / 评论(0) 分类 英语新闻

1.Imagination is more important than knowledge. 想像比知识还要重要 2.The important thing is not to stop questioning. 重要的是,不要停止问问题。 3.Science without religion is lame; religion without science is blind. 科学没有宗

发表于:2019-02-19 / 阅读(262) / 评论(0) 分类 实用英语

How to get rid of procrastination? 如何摆脱拖延症? Just take the first step. 只需迈出第一步。 When you start to look too far into the future any task or project can seem close to impossible. And so you shut down because you become ov

发表于:2019-03-06 / 阅读(459) / 评论(0) 分类 英语听力广播—Listening
学英语单词
adjustable-rate
alkalinizations
anastatica hierochunticas
angico
annual dose-rate
arsanthridine
ascaridoles
automatic reorganization
Bicester
Big Wells
borrower lender relationship
Calophaca sinica
child molestation
circulation theory of airfoil
coamings
conicalvalve seat
cross-area
cut off from
d-ind
dry sulphitation
dynamic assembly of picture
entry costs
eye-level
face cavitation
feedwater filter
feigned accomplice
fethers
fly-up
freies
ft-l,ft.-l,ft-L
full employment without inflation
GartnerGroup
Gia Lai, Cao Nguyen
grandmummies
helium closed loop
heteroplectenchyma
hyperhidrotic
hyperloop
indigirkas
jet generator
kicker cylinder
kola tannin
ledgment
lewse
line of motion
linear optimal control system
looking for customers
male metal catheter
maple pea
maritime power
merchandise exports
misdivision haploid
odontoclastic
outscreaming
outside core
overhastiness
pageant-goers
plastosemiquinone
plug lid
polises
PPM (pulses per minute)
primno brevidens
pyramid-like
quercus ilicifolias
quercus variabiliss
raspberry brake
rated horse-power
raven's progressive matrices(rpm)
removal of electrons
repeated root
reverse interlocking
Santaphobia
seizure of property
shibasaki
skyteam
solute transfer
square-shaped roof
standard production
stefanov
sterecscope
submarine cable
sumishoes
supercontinuum
takable
taqman
taraktogenoss
temporary Internet files
the Spanish Inquisition
tip-up table
turabis
Uch Jacobābād
undoingness
vacant number intercept
Valderrobres
vdo
vertical tail unit
vitaminoid
websight
Wildemann
written on water
zikhron yaaqov
zinc box precipitate